Quote Originally Posted by Phatose
AsRock 939Dual-Sata. AFAIK the only AGP/PCIe mobo on the market where AGP isn't completely tanked.

CPU - get an AMD dual core. Either a cheapo Opteron 165 if you're an overclocker, or as decent an X2 as you're willing to pay for if not. Since you're using DDR1, and since the only AGP/PCIe mobo I know of it the ASrock above, a Core2 Duo isn't workable.

HD - eh...whatever.
Wrong.
I myself use an AsRock 775 Dual-VSTA.
It supports the Core 2 Duo, has AGP8x, PCIe x4(x16 cards do fit and work but run only at PCIe x4)
Concerning RAM, it has two slots for DDR1 up to 400MHz and two slots for DDR2 up to 667MHz, you can't use both simultaneously though.(I once had a board that ran Edo- and SD Ram simultaneously IIRC, but that was ages ago)

It's also outfitted with four internal and two external SATA 2 connectors.

I bought this along with an E6600 and have since upgraded from an NVidia 6600GT AGP to an NVidia 7950GT PCIe and from 1GB DDR1 to 2GB DDR2 and so far the system runs pretty stable and pretty fast, a great piece for upgrading IMO but because of the slow PCIe connection I am now looking to get a somewhat decent NForce 6 board.