I am building my first system and it is only for video not a gamer. I will be working with analog and DV. Here is the list I have at this time if you see something you might change or I need to look at please let me know.
Matrix ATX Case w/450-Watt PS
Intel D945Psn motherboard
Intel Pentium D 820 processor 2.8GHz Dual Core
ValueRam 2GB (2x1 GB) DDR2 533
Seagate 80GB 7200
Seagate 300GB 7200
Samsung 16x DVD-ROM 48x CD-ROM IDE
Plextor PX-740A Internal IDE 16x DL
TDK CDRW 52x
(Still not sure on the Video card would like 2 run monitors)
Radeon X850XT Radeon X800 pro ?
ADS PYRO 1394DV
(Also not sure on the capture card)
Sound Blaster Audigy 2 ZS
That is one powerful custom machine you got there.
All the components look good.
The Radeon X850 XT comes with dual DVI outputs for driving a pair of LCD monitors without the analog conversions muddling things up. Most ATI cards lack of a second DVI output - but the X850 XT is an exception. So it's a good choice for your needs.
As for the ADS PYRO 1394DV, it comes with a capture card, which provides 3 FireWire ports to your computer. So again, it is a good choice.