msi motherboard replacement

Hi all. I need to replace the mobo in my 2003 vintage computer. Currently have the MSI 648 MAX ms-6585 and would like to get another (hard to find!) or one that would allow me to hook up all the other parts in the computer without upgrading the cards, memory, chip, etc. Have a P4 2.53 cpu, pci cards, 8x agp video, and pc3200 ddr memory. Any recommendations and where to buy? TIA!