Problems with internet today, now certain things don't work

My Comcast has been disconnecting all day for whatever reason, usually for a short period of time.. It then would reconnect and I'd go on doing what I was doing.

After one of the disconnects, however, I am not able to get onto the website I'm almost always on or log in to my server on World of Warcraft game.

The internet works fine - I can go on any website and such, but when I try to go onto the vn boards, http://vnboards.ign.com/WoW_General_Board/b19789/ for example, it times out and won't let me connect.. World of Warcraft seems to be working - I can log on to all servers except for mine.

I have no idea why it's doing this..

I've restarted computer a million times, disconnected and reconnected my modem over and over.

Any ideas?

Thanks.