The default windows API functions to load external libraries into a program
(LoadLibrary, LoadLibraryEx) only work with files on the filesystem.  It's
therefore impossible to load a DLL from memory.

But sometimes, you need exactly this functionality (e.g. you don't want to
distribute a lot of files or want to make disassembling harder).  Common
workarounds for this problems are to write the DLL into a temporary file
first and import it from there.  When the program terminates, the temporary
file gets deleted.

MemoryModule is a library that can be used to load a DLL completely from
memory - without storing on the disk first.

See doc/readme.txt for more informations about the format of a DLL file and
a tutorial how they can be loaded directly.