sorry to keep asking all these questions. I have looked aroubd on other threads and foubd good reviews about the NVIDIA QUADRO's
so I really think I will go with one of these, buit the thing is I need a pc which has this built in as I cant build comps. Anyone post a link for a desktop would be great.

also is this pc not ok?

Cutting Edge PC with an array of features
AMD Athlon™ 64 X2-4200+ Dual Core
with HyperTransport™ Technology
Genuine Windows® XP Media Center
ASUS A8N-SLI nFORCE 4 PCI X Mainboard
1024MB DDR 400 Memory
250GB Serial ATA Hard Drive
256MB nVIDIA Geforce 7600GT Graphics
Dual DVI,HDTV & TV Out PCI Express
19" Viewsonic VA-912 TFT LCD Monitor,
DVI & 8ms response time + Built in Speakers
Sony 16x Dual Layer DVD Writer
7.1 Channel Surround Sound Audio
Logitech Cordless KB & Optical Mouse
Advantage Warranty-2Yrs Onsite + 1Yr BTB