OK, here's what the warning file said (viewed w/Notepad):
10/7/2007 4:51:08 AM 1191747068 SYSTEM 1756 Sign of "JS:Agent-Q [trj]" has been found in "http: //80.93.48.74/ tersreqwsrewter/" file.
10/20/2007 11:01:41 AM 1192892501 SYSTEM 1820 Sign of "JS:Agent-Q [trj]" has been found in "http: //80.93.48.74/ plpwoeqwdkpwefiwe /" file.
I am noticing that it showed up before on the 7th, same IP. At 5AM that was probably my daughter logging into MySpace, and today, I was logging into MySpace when it happened...hmmm. BTW, tracing the IP address goes to a Russian site.
JS - is that JavaScript?