Well, your computer sounds more than capable. Really, set your pagefile to a static size (4GB sounds fine). However, your pagefile should not even be is use, 2GB of real RAM should be more than suffucient. Sounds to me like Media Cetner OS is not a good OS if it can't handle compiling Ogre (I have never used Media Center). I've never had a problem compiling Ogre on Win98, Win2000, or WinXP in terms of memory usage. And, I have had various RAM sizes (from 512, 768, 1GB).