Please forgive my ignorance but i''m curious as to what the benefits of pre-compiled headers are. I should probably know this, but what can I say. Thanks as always Robert Warden Lasershot Shooting Simulations

Compilation speed increase is the main advantage, I think. If you use a lot of large headers that change very infrequently (or never, like Windows, MFC, STL), having those headers precompiled saves time when rebuilding your program.

Here is info on how to use precompiled headers in MSVC.