BTW, i'm using a PIII 933MHz with 512mb ram, 40gig + 50gig HD, ATI Radeon 32mb PCI 3D card, Road runner cable modem, 16'' standard monitor.. I can play on servers fine with little to no inherit lag but when i host server mysef + play on it, it gets a little laggy..
On the way: PIV 2.2GHz, 1024MB ram, 120gig HD, NVidia Geforce 4 128mb 3D card, 18'' LCD flat panel screen, DVD-RAM/DVD-R and 40x12x48 CDRW (Yes i said 40 times WRITE). Gateway rocks !
http://www.gateway.com click "most powerful PC".