Halo tomorrow night

I can't get on tonight... Son of a bitch. I actually don't think I'm going to be able to get back on for a few months. My internet connection is all screwed up, and Live nor Comcast know what the problem is. Sometimes I can get on, sometimes I can't.. It's very strange? If I had a static IP, I would be fine, but apparently, Comcast doesn't provide them..