Just get any intel MB in that range. Or jump on a dell 400sc server. You can score them under $300 after rebates. intel 875mb, agp slot 10/100/1000 lan, Video, sound. Quiet.
I got a 3.2c for $399 after rebate when the 3.2c's were $700. I Rma'd the 40gig hd, and 128 memory back to dell for $160 credit.
So i got a nice barebones witha 3.2c chip for. $240 3 months ago.
SATA connectors on board.
or just get any intel board and build your own, Your not OCing so that's the only reason i picked the dell.
oops i see london now!!! No shipping out of country.
I've used these with no probelms at all, when people ask for all intel.