I've got a few machines. All are connected to a Cable modem via a linksys dsl router (soon to be cisco switch and router).  This is my personal equipment...... 
 
 
Compaq proliant 2500 server:
Pentium Pro 200
256 mb ram
2    4gig HDD mirrored system drive
3    4gig HDD on RAID 5 for data
Second server computer:
Dual PentiumIII 500
256 mb ram
2    9gig 10k rpm Ultra2 scsi mirrored system/data drive
Thrid computer(play\video toaster machine)
Dual PIV Xeon 1.8GHz (supermicro p4dc6+)
1 gig 800MHz rdram memory
40gig ata100 system drive
40gig ata100 backup storage/junk drive
4   36gig 10k rpm Ultra3 scsi stripped for 140gb (video drive)
Visiontek G-force III 64mb Ti500
21" Nokia Monitor
(a few other toys)
Basicly I have minilogon set up on the second server and play from the third system.