The motherboard on my sony vaio PCV-RX850(stock system-2.4 proc.,512 MB DDR ram,32 meg SIS 651)recently fried and I'm looking for another motherboard.I'm finding it nearly impossible to find a P4S533-VX replacement and need to know what other mobos are fully compatible with this system.For instance will a P4S533-MX or X fit into this system as easily as a VX board with no modifications,and if some modifications are needed what would they be.I'd really appreciate any help that anyone can give me.Thanks