I am running Vista Home Prem.I use an 8800 GTS EVGA.I have the latest drivers for my 8800. I run 2 Viewsonic monitors. One is a VG900b and is fine. I also run a VX2235 digital monitor. Both monitors are listed in device manager by model. I manually installed drivers directly off of the discs.I have also downloaded Viewsonic's monitor drivers. I can't get my 22" to go to it's native resolution of 1680x1050.I have had these installed for a long time and working fine. When I ran a hard disc error check that is listed under tools under properties of my computer it erased my 22" and it's capabilities to operate @ native resolution. Another difference is that before I manually installed the VX2235, it was listed as a 'non plug and play monitor' under device manager. I have never seen that before. Does anyone know how to fix this? I am this close to going out and buying a new XP Pro disc.