I have just been reading up on upgrading my Dell Dimension 3000 by replacing the mobo with a ASUS P4P800-VM. Apparently this will drop in with no mods at all and then I will be able to put in a decent AGP graphics card. However, if I am gonna upgrade the mobo I would really like to drop in one with a pci-e slot. Anyone know a suitable board, same form factor, power requirements etc that will do the job?