I just hbought the game Day Of Defeat, but everytime I play on it,it lags and my ping is always over 500 when everyone else have it under 100. I mean, my PC (P4 1.6 Ghz, GeForce4 Mmx 440, 384MB Ram, Win XP) matches the system requirement of the game and I have high speed cable internet and a router (Linksys Wireless G Router WRT54G). Since I pass every requirement, what is the problem?