Your DSL is normally only 80 kilobits a second? Why not just use 56 kilobits/second dialup?

yeah, 80 kilobytes a second downloads are is my speed, its advertised as 128 something. and Uploads are 1.5 something.

Oh, 80 kilobytes - that's totally different (1 Byte = 8 bits, so 80KB/s = 640Kb/s, where B is bytes and b is bits)

Maybe Windows Update or some other utility is downloading updates in the background?

Try Start->Settings->Control Panel->Administrative Tools->Performance. Right-click on the graph and choose Add Counters. Then under Performance object select Network Interface. under Select instances from list pick the network card that is connected to your DSL modem/router/whatever. Under Select counters from list pick Bytes Received/sec or Bytes Total/sec. Hit Add, then Close. Now on the list at the bottom, click on the counter you just added and look at the Last and Average numbers just above - if they're higher than a couple thousand then something on your PC is eating your bandwidth. If they're near zero then it may be connection problems between you and your ISP.