OK, if I wuz gonna build ya da BC/ENU Spezial, this is what I would go for:
CPU Core 2 Duo E6750 2.66GHz 4M 1333M 775 Retail $208
M/B Intel DP35DPM Aud/GbLan/SATA/1394 ATX $123
RAM 4GB(2x2GB) DDR2 PC6400 800MHz Matched Pair HyperX Kingston $189
HD 2x Seagate 500G 32M 7200 SATA II $276
VID eVGA GeForce 8600GTS 256M TV-Out/2DVI $169
Case+Power Supply Antec Atlas 550W Server Black ATX $143
http://www.enuinc.com/cas-antec-047.jpgMonitor 20" Widescreen KDS K-20MDWB 20 5ms DVI Widescreen $209
http://www.enuinc.com/mon-kds-lcd-001.htmlDVD Pioneer DVR212D 18x DVD+/-RW Dual Layer Black SATA $ 39
OS MS Windows Vista Business 32bit OEM 1-Pack $154
for a total of $1,511.
My first pass was over $1900 so I downgraded the CPU and video card a bit (but they are still good).
The monitor is a 20" wide LCD which I own, and is fabulous.
I used a rather large power supply because I don't want no steenking puny ones!
RAM type/price can vary widely.
I went with Vista (against my own recommendations) because it can probably use the extra RAM more efficiently.
Also, these are all ENU prices (no shipping, remember?) and should just be used as benchmarks against the system you build or buy.
((edit))
Also, I assume others may have corrections, improvements, etc to the above list, which I encourage. That way when it blows up in smoke I can say "See! It wouldn't have done that if Chucara hadn't added the Mobile Coffee Cup Holder!"