QUOTE(dsenart @ Feb 14 2007, 02:27 PM)
You might need to open up some ports on your router.. but first try resetting your router and your internet, unplug your modem and unplug your router, find the reset button on your router and hold it for 5 seconds. Then wait at least 30 seconds and plug the modem in,, once it is fully reconnected reconnect your router. turn it on and try.
If youre router is capable just put the 360 in DMZ