Odd, I don't see how if you are have it set to 1Kb up and not sharing then it really won't be using much bandwidth at all. You sure its not another program causing this?
We have ran some tests and I personally gauge the bandwidth and I have never seen it get excessive to the point you are saying. Especially if not set to max.

For a dial-up user you should keep it down to 2 to 3Kb/sec when in use.