DOOM 3 Ultra Quality Performance Tutorial (1.5)

This is a simple straightforward guide to getting a 128MB video card in a system with 1GB of ram to run Doom 3 in Ultra Quality mode without stuttering
Or to getting a 128MB video card to run High Quality mode without stuttering in a 512MB System. Is it impossible? HELL NO, my 9700 runs Ultra just fine. The guide includes a custom autoexec config, and Doomconfig - BY NO MEANS DO YOU HAVE TO USE T