Hardware advice for firewall

Hi, I need advice on good hardware to buy for a firewall I'm building. I'm trying to find a motherboard that would be very stable on OpenBSD that would have the following: - Opteron 1210 compatible - ECC memory - 2 integrated 1Gb NICs working rock solid on OBSD4.0 SCSI is not needed as

Sun Fire X2100 M2

Hi, Does anyone have any experience with this HW on OpenBSD. I can't find specifics on the NICs used on Suns webpage. What are they and are they well supported? This seems like the perfect package for my purposes. Regards, Edvard