Dual Athlon MP 1600+ processors
Tyan Tiger S2460 Motherboard
100 GB Western Digital 7200 RPM 8MB Cache
1 GB PC2100 ECC RAM

What do you think? Should I change any configuration?

definitely need more ram.... 2-4gb would be much nicer for the cpu...

also be great to use scsi ideally raid.

Fans... very strong fans.