CoD2 server question

[super_neil]

I am currently in the process of helping someone out with setting up a internet gaming café. They want to have a permanent CoD2 server within their LAN of 20 PC's (hopefuly up to 30). What sort of server should I be looking for here? I am also hoping that this will be able to store all the account software, basicly peoples usernames and passwords. I was looking at something like this: HP ML370 G5 Server Xeon 5120 Dual Core 1.86GHz 1gb CD-RW/DVD-ROM combo Drivers & Utilities. Or am I totaly wrong? Should there be a seperate server for the accounts, etc and one just to run CoD2 for 12 hours a day?

If this is in the wrong forum please move it

Thanks

[fade2black2004]

just build asemi cheap core 2 rig and use it as a server
something like
MSI 650I -110 bucks
Core 2 E6320 - i think 180
GSkill 2GB DDR2 800 - 90
Xcilo 500watt - 50
250gb HDD - 60

that should work well as a server