I bought the best motherboard brand possible, ASUS, and replaced a malfunctioning Soyo Dragon Black Edition motherboard running an Athlon XP 2400 with 512 MB.
I had an extra Athlon 64 X2 4800+ and 3 GB of DDR2 laying around. I got the ASUS M2N68-AM Plus motherboard. Afterward, I installed Windows 7 and OpenSuse 11.3 on it yesterday. That PC has a bunch of freeware games, Roms, and advanced audio coding archives on it. People normally buy Serial SATA Power Data to 4 Pin IDE+SATA Data Cable for your IDE hard drives now-a-days which cost $5.