- Your hard drive is a serial
ATA harddrive, so this requires a different power supply plug and a different connection cable. I would suggest getting a high power supply especially if you're going to have alot of components, but you can save money by getting a $10 SATA power adapter (SATA power to standard) rather than getting a really expensive PSU that has it (although, if you look hard enough, there are some cheap PSUs that will have it. As for the connection cable, the mobo should come with atleast one.
- Do NOT hook up a thermostat or any of the fans to the motherboard. The 2.8 GHz P4 w/ HT takes 76 watts of power (a whole lot more than your traditional 40 watts). This will cause some weird problems. I strongly suggest hooking up the fans and thermostat (if the case has one) to the PSU.
- Buy round IDE cables. They're a cheap way to keep your PC cooler.
- video card- i strongly suggest the NVidia 6800 Ultra. Here is the benchmarks compared to ATI both using your processor:
Good luck with it.