Unload .dll's to Free Memory

Windows Explorer caches DLLs (Dynamic-Link Libraries) in memory for a
period of time after the application using them has been closed. This
can be an inefficient use of memory.

1. Find the key [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current
Version\Explorer].
2. Create a new DWORD sub-key named 'AlwaysUnloadDLL' and set the default
value to equal '1' to disable Windows caching the DLL in memory.
3. Restart Windows for the change to take effect.

I tried this after running a intense program, then watched the task manager;
memory recovered it self.