Originally Posted by
wtopace
From the looks of your picture, it looks like the motherboard in your Dell has both a PCI and PCI-e port available.
Why not borrow the Mesa card from your other Tormach temporarily to test it out? If the Dell has anything important the hard drive, make sure to back it up or swap it out before installing PathPilot, as the PathPilot installer will image over your drive and effectively erase everything on it. This would give you positive confirmation that the PathPilot upgarde kit would work before you order it.
For what it's worth, the Linux kernel is really not very picky driver-wise about underlying hardware. You should be just fine with just about any 64bit machine. I have had 0 hiccups with my controller PC that I threw together with some old junk. I saw a recommendation above about running a 32bit processor, but the Tormach-provided image runs just fine on my 64bit proc.