I am getting ready to build a new system to do 3d modeling apps. was orginally going to install 8gbs of ram but was told that xp does not support that much and that i only supports up to around 4gbs or so. I also i hear that video ram is also include with the ram limits. But i heard that vista might support that much. I am confused as to what to do, can anyone give me the 411 on this delimma?