Heatsink/Fan: Cooling an AMD CPU is much more problematic than an Intel one. If you get CPU temperatures around 60o to 70o C, using the BIOS or a program like Motherboard Monitor 5, then you got problems. Slap a GlobalWin FOP38, an Alpha 6035, or a sexy Orb if you need to save cash. Some people are using all-copper heatsinks, but make sure it's a reputable one. I've been eyeing my grandmother's old silver teakettle and wonder how I could make a heatsink out of it. Normal temperature should be around 40o - 50oC.

Memory: Crucial 128MB PC133 CAS 2. It's pretty cheap right now. Sometimes they have free shipping. And they have really great online order forms. 4-way bank interleave anyone?

The KT7 has a lot of memory options. It took about 15 reboots to get this number. Non-overclocked.