The deed is done!
Thanks to Landis et al., I've gone with the Dell Precision T4300
Quad 9450,2.66GHz,133312MB,L2,375W
4GB,800HZ,DDR2 ECC SDRam
Dual nVidia,Quadro FX 570 256MB dual DVI (paid more for upgraded graghics)
Windows XP, of course.
And because I wanted to feel warm and...