I FINALLY got my second board to post (RMA'ed) the first one. It kept shutting itself down and giving me blue screens when I tried to install windows. MSI tech support told me to set my RAM voltage to 2.7v instead of auto, and manually configure the 2.5-3-3-7 timings it was rated at. After doing that, windows went on perfectly with no problems. Just wanted to share my experience for reference.
MSI K8n Neo2 Platinum Ver.1 bios ver1.4
Athlon64 3000+ winchester
1 stick 512MB PQI Platinum PC3200 2.5-3-3-7 @2.7v in DIMM 1
Antec pp303x 350W 18amps@12v
Geforce3 ti200 (i know, i know)
Soundblaster Live 5.1
1 Maxtor Daimondmax 40GB PATA
MSI K8n Neo2 Platinum Ver.1 bios ver1.4
Athlon64 3000+ winchester
1 stick 512MB PQI Platinum PC3200 2.5-3-3-7 @2.7v in DIMM 1
Antec pp303x 350W 18amps@12v
Geforce3 ti200 (i know, i know)
Soundblaster Live 5.1
1 Maxtor Daimondmax 40GB PATA