I've begun my dream machine build and am going to build another from the parts I have left over for the grandson. (Yeah, I know there are better things available, but this is already paid for) I have a P4 478 socket 1.5GHZ / 400 MHZ FSB / 256K Cache (I think it's a Willamette) ATX mid tower case 500w Rosewill PSU (24 pin) 2 X 512MB pc133 SDRAM memory (Could sell off and upgrade to DDR) ATI 2x AGP video card (definately needs upgrading on the cheap) CD Burner / Floppy Windows XP license P4 mobos are hard to find that combine all these elements. I've been trolling newegg and the net and nothing quite matches that's reasonably priced. Any recommendation? Also, can this CPU performance be improved? Can the 64 bit extentions be unlocked? Is there an Intel upgrade to get this to hyperthread?