Hi, my grandfather switched got himself adsl instead of cables for the internet and also it now has a router so two computers are connected to the internet. Now, i have downloaded somthing like 5 multiplayer games and there seems to be a problem because for some reason the computer simply can't connect to the games' servers. He has windows XP home adition on the computer I checked this and i'll also mention that before the switch was made, one of the multiplayer games (I haven't downloaded the others by that time) was working.

Sorry for making this so long.

Does anyone know how this could be fixed?