A while back, I had a crappy modem that plugged into my pc via USB, and had no ethernet. I decided I wanted to route it via ethernet, but I had to get a new modem because mine didn't support that. The DSL company (bellsouth) wouldn't give me a new modem, but offered home networking for $10 a month I bought a modem off ebay, Alcatel Speedtouch. I hooked it up to a D-link ethernet router my dad had. Now I'm not sure whether it started happening before or after I set this up, but this is when the internet started disconnecting. It wouldn't say it was disconnected, by the internet would often drop for about 20 seconds. About a year later I got a D-Link Wireless G Airsomething. I still have the same problems. If it disconnects and I go right away to the router settings (via it's IP) and press disconnect and connect again, it normally starts working without having to wait. So- I definitely don't think it's my router, as both have done the same thing. Now I don't know whether it is my internet service or my modem. Is there any way I can test to see which it is? I know it's not the main computer it connects to, because often the wireless computer will do the same when the main is shut down.