diff --git a/trunk/ProcessHacker/Forms/OptionsWindow.Designer.cs b/trunk/ProcessHacker/Forms/OptionsWindow.Designer.cs
index fec321575..308ce80b6 100644
--- a/trunk/ProcessHacker/Forms/OptionsWindow.Designer.cs
+++ b/trunk/ProcessHacker/Forms/OptionsWindow.Designer.cs
@@ -79,6 +79,7 @@
             this.label16 = new System.Windows.Forms.Label();
             this.colorCPUKT = new ProcessHacker.Components.ColorModifier();
             this.label17 = new System.Windows.Forms.Label();
+            this.checkEnableKPH = new System.Windows.Forms.CheckBox();
             ((System.ComponentModel.ISupportInitialize)(this.textUpdateInterval)).BeginInit();
             this.tabControl.SuspendLayout();
             this.tabGeneral.SuspendLayout();
@@ -128,7 +129,7 @@
             // 
             this.buttonClose.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
             this.buttonClose.FlatStyle = System.Windows.Forms.FlatStyle.System;
-            this.buttonClose.Location = new System.Drawing.Point(362, 257);
+            this.buttonClose.Location = new System.Drawing.Point(362, 276);
             this.buttonClose.Name = "buttonClose";
             this.buttonClose.Size = new System.Drawing.Size(75, 23);
             this.buttonClose.TabIndex = 2;
@@ -187,11 +188,12 @@
             this.tabControl.Location = new System.Drawing.Point(12, 12);
             this.tabControl.Name = "tabControl";
             this.tabControl.SelectedIndex = 0;
-            this.tabControl.Size = new System.Drawing.Size(425, 239);
+            this.tabControl.Size = new System.Drawing.Size(425, 258);
             this.tabControl.TabIndex = 7;
             // 
             // tabGeneral
             // 
+            this.tabGeneral.Controls.Add(this.checkEnableKPH);
             this.tabGeneral.Controls.Add(this.comboSizeUnits);
             this.tabGeneral.Controls.Add(this.label18);
             this.tabGeneral.Controls.Add(this.checkHideWhenMinimized);
@@ -206,7 +208,7 @@
             this.tabGeneral.Location = new System.Drawing.Point(4, 22);
             this.tabGeneral.Name = "tabGeneral";
             this.tabGeneral.Padding = new System.Windows.Forms.Padding(3);
-            this.tabGeneral.Size = new System.Drawing.Size(417, 213);
+            this.tabGeneral.Size = new System.Drawing.Size(417, 232);
             this.tabGeneral.TabIndex = 0;
             this.tabGeneral.Text = "General";
             this.tabGeneral.UseVisualStyleBackColor = true;
@@ -634,12 +636,23 @@
             this.label17.TabIndex = 10;
             this.label17.Text = "CPU Kernel Time:";
             // 
+            // checkEnableKPH
+            // 
+            this.checkEnableKPH.AutoSize = true;
+            this.checkEnableKPH.FlatStyle = System.Windows.Forms.FlatStyle.System;
+            this.checkEnableKPH.Location = new System.Drawing.Point(6, 207);
+            this.checkEnableKPH.Name = "checkEnableKPH";
+            this.checkEnableKPH.Size = new System.Drawing.Size(217, 18);
+            this.checkEnableKPH.TabIndex = 12;
+            this.checkEnableKPH.Text = "Enable experimental kernel-mode driver";
+            this.checkEnableKPH.UseVisualStyleBackColor = true;
+            // 
             // OptionsWindow
             // 
             this.AcceptButton = this.buttonClose;
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(449, 292);
+            this.ClientSize = new System.Drawing.Size(449, 311);
             this.Controls.Add(this.tabControl);
             this.Controls.Add(this.buttonClose);
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
@@ -716,5 +729,6 @@
         private ProcessHacker.Components.ColorModifier colorPackedProcesses;
         private ProcessHacker.Components.ColorModifier colorDotNetProcesses;
         private System.Windows.Forms.CheckBox checkVerifySignatures;
+        private System.Windows.Forms.CheckBox checkEnableKPH;
     }
 }
\ No newline at end of file
diff --git a/trunk/ProcessHacker/Forms/OptionsWindow.cs b/trunk/ProcessHacker/Forms/OptionsWindow.cs
index 685c7f4f5..65e28a316 100644
--- a/trunk/ProcessHacker/Forms/OptionsWindow.cs
+++ b/trunk/ProcessHacker/Forms/OptionsWindow.cs
@@ -47,6 +47,7 @@ namespace ProcessHacker
             checkShowTrayIcon.Checked = Properties.Settings.Default.ShowIcon;
             checkHideWhenMinimized.Checked = Properties.Settings.Default.HideWhenMinimized;
             checkVerifySignatures.Checked = Properties.Settings.Default.VerifySignatures;
+            checkEnableKPH.Checked = Properties.Settings.Default.EnableKPH;
 
             textHighlightingDuration.Value = Properties.Settings.Default.HighlightingDuration;
             colorNewProcesses.Color = Properties.Settings.Default.ColorNewProcesses;
@@ -95,6 +96,21 @@ namespace ProcessHacker
                 Array.IndexOf(Misc.SizeUnitNames, comboSizeUnits.SelectedItem);
             Properties.Settings.Default.VerifySignatures = checkVerifySignatures.Checked;
 
+            if (checkEnableKPH.Checked && !Properties.Settings.Default.EnableKPH)
+            {
+                checkEnableKPH.Checked = MessageBox.Show("You have chosen to enable ProcessHacker's experimental kernel-mode driver, " +
+                    "KProcessHacker. This is HIGHLY EXPERIMENTAL and MAY CAUSE YOUR COMPUTER TO CRASH.\n\n" +
+                    "KProcessHacker allows Process Hacker to display more types of handles and bypass " +
+                    "certain types of rootkits and security software. If you do not need these features " +
+                    "or do not wish to use KProcessHacker, click No.\n\nIf you do wish to use this feature, " +
+                    "KProcessHacker will be loaded the next time Process Hacker is started. If your computer " +
+                    "crashes, the next time Process Hacker is started KProcessHacker will be disabled.",
+                    "Process Hacker", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation,
+                    MessageBoxDefaultButton.Button2) == DialogResult.Yes;
+            }     
+
+            Properties.Settings.Default.EnableKPH = checkEnableKPH.Checked;
+
             Program.HackerWindow.NotifyIcon.Visible = Properties.Settings.Default.ShowIcon;
             Program.HackerWindow.ProcessProvider.Interval = Properties.Settings.Default.RefreshInterval;
             Program.HackerWindow.ServiceProvider.Interval = Properties.Settings.Default.RefreshInterval;
diff --git a/trunk/ProcessHacker/KProcessHacker.cs b/trunk/ProcessHacker/KProcessHacker.cs
index 1789e33a4..23cde79c5 100644
--- a/trunk/ProcessHacker/KProcessHacker.cs
+++ b/trunk/ProcessHacker/KProcessHacker.cs
@@ -51,6 +51,18 @@ namespace ProcessHacker
 
         public KProcessHacker()
         {
+            if (!Properties.Settings.Default.EnableKPH)
+                throw new Exception("KProcessHacker is not enabled.");
+
+            // in case the computer crashes, KPH will be disabled the next time 
+            // PH is started.
+            Properties.Settings.Default.EnableKPH = false;
+
+            try { Properties.Settings.Default.Save(); }
+            catch { }
+
+            Properties.Settings.Default.EnableKPH = true; // if the computer crashes, this won't actually be saved
+
             Win32.ServiceManagerHandle scm = 
                 new Win32.ServiceManagerHandle(Win32.SC_MANAGER_RIGHTS.SC_MANAGER_CREATE_SERVICE);
 
diff --git a/trunk/ProcessHacker/Properties/Settings.Designer.cs b/trunk/ProcessHacker/Properties/Settings.Designer.cs
index 969ffadb4..2a7c994e1 100644
--- a/trunk/ProcessHacker/Properties/Settings.Designer.cs
+++ b/trunk/ProcessHacker/Properties/Settings.Designer.cs
@@ -886,5 +886,17 @@ namespace ProcessHacker.Properties {
                 this["NetworkListViewColumns"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("False")]
+        public bool EnableKPH {
+            get {
+                return ((bool)(this["EnableKPH"]));
+            }
+            set {
+                this["EnableKPH"] = value;
+            }
+        }
     }
 }
diff --git a/trunk/ProcessHacker/Properties/Settings.settings b/trunk/ProcessHacker/Properties/Settings.settings
index 167783eb9..00579db6f 100644
--- a/trunk/ProcessHacker/Properties/Settings.settings
+++ b/trunk/ProcessHacker/Properties/Settings.settings
@@ -218,5 +218,8 @@
     <Setting Name="NetworkListViewColumns" Type="System.String" Scope="User">
       <Value Profile="(Default)" />
     </Setting>
+    <Setting Name="EnableKPH" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">False</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file
diff --git a/trunk/ProcessHacker/app.config b/trunk/ProcessHacker/app.config
index d69f687b0..0d1162a0d 100644
--- a/trunk/ProcessHacker/app.config
+++ b/trunk/ProcessHacker/app.config
@@ -223,6 +223,9 @@
             <setting name="NetworkListViewColumns" serializeAs="String">
                 <value />
             </setting>
+            <setting name="EnableKPH" serializeAs="String">
+                <value>False</value>
+            </setting>
         </ProcessHacker.Properties.Settings>
     </userSettings>
 </configuration>
\ No newline at end of file