OpenGL games freeze when online!

All my Open GL games freeze when I try to play them online or if i’m on the internet & try to play it. This includes Quake 3, Return To Castle Wolfenstein, Half-Life & Counter-Strike. I have tried everything & i’ve been to the game companies support forums, but still no success. I have the latest drivers for everything (including my graphics card)!

My System specs are:
AOpen AX6B Motherboard
1GHZ Pentium 3 Processor
256 MB SD Ram
Matrox Mystique G200 Graphics card
10GB Maxtor Hard Disk
& a 56k Internal Rockwell Modem

Please help!!!

So you can play them single player without any probs?!

The games work fine in single player & in multiplayer. Its only when I go online that they freeze when I try to play them!

Thanks for asking please help!!!

I have just been checking my system drivers & have checked if I have the latest drivers for my motherboard, modem, & graphics card. I have the latest drivers for everything & the only problem that I have is playing OpenGL games online.Please help me!!!