Hi there, thanks for the help.

The DSL router is a "speedstream" one supplied by my ISP. It is only 6 months old or so. I don't know what a network adapter is. I have the router connected via ethernet to the airport base station (it's an older base station -- this is what apple calls its wifi router).

I have done speed tests via my ISP (they have one through dslreports.com). With limewire running in the background with 50kb/s down and 5kb/s up, I get 420kb/s down and 36kb/s up.

So it's between 3 and 5 mb dsl. It's supposed to be 3mb dsl but I seem to have a good connection to the ISP.