I tried to combat the problem by purchasing and installing Windows Live One Care.
It has not seemed to correct anything... but occassionally lets me know that it has detected "Trojan Dropper: Win32/ Boaxxe.E" and requests to remove it. I click OK and the progress bar works for aminute... but it has done nothing to restore the speed of the computer and in a short time I get the same pop up that says it has been detected again.
I have also been getting "kevin gets green" and "RegCure" pop up ads. WHat can I do to remove this Trojan?