We have two 3rd party cards that we would like to install into a Rackmountable box. One card is a full-height & full-length 5volt PCI card, so we cannot put this into a PCI-X slot. The other card requires a PCI-X slot. It would be nice to have a PCIe slot or two for possible future upgrades.

The real kicker is that this box needs to be able to run Windows XP as this is currently the only supported OS for the cards' drivers. I only mention this because we tried putting XP on our Dell Poweredge 2950 and it wouldn't even boot into the blue XP install screen.

Ideally we would like to get 2x Quad Cores in there with support up to 4GB of memory. Going up to a 4U chassis would be acceptable but a 3U would be preferable.

I would appreciate any recommendations you guys have to offer.

Thanks!