My main machine has the following:

Win XP Pro SP1 running on an Asus A8V Deluxe with an AMD FX 60, 2x1024 Corsair PC3200 in Dual Channel @ 3-3-3-8, an ATI AIW X800 XT, a TB Santa Cruz, 5 WD 120 gig SE IDE drives, 1 BenQ 1640 DVD drive & Five 80mm fans (3=Blue LED) housed in an Antec 1000AMG case with an Enermax 460w PSU (33a on 12v) plugged into an APC RS 1200va UPS w/boost & trim AVR. I have a 21" Viewsonic P225 monitor usually running at 1920x1440 or 2048x1536. Using a Logitech trackball and a standard Dell keyboard.