I want to upgrade my Supermicro X5DAL-TG2 mobo in order to accommodate a GeForce 7800 video card. I want to salvage as much of my existing system as possible: two Xeon 2.8s, 4x512 MB 180 pin Kingston RAM, Adaptec dual 160 SCSI controller card, NewTek VT card (32 bit PCI). Which dual Xeon board would you recommend?