Here's the full story: we have DSL and a router hooking it up to the 4 computers in the house. One evening I was on the internet and it was going up and down, the usual sketchy internet. Then it went down all together, so we reset the router, the modem, all the computers... nothing worked. No internet. Here's the weird part: one computer on the network still has internet, and another one can get internet occasionally for a couple minutes. What is the problem, and what should I do about it?