My second "upgrade a retail computer" question in two days. I want to upgrade my friends i810 chipset, "My Favotite PC", with a Celeron 800mhz cpu. When I installed ram for him, I recall seeing a jumper to change fsb speed from 66mhz to 100mhz, and remember some people in the forums able to get their 400`s to run at 600mhz. Have any of you guys tried running a Celeron II in these?