Somebody else who uses Trend Micro is also getting virus alerts:
Getting spyware and virus warnings
I'm not sure if you're really infected, or whether maybe Trend Micro's giving you false positives. Which TM component is giving you alerts - antivirus or antispyware? Have you tried scanning with other AV/antispyware apps? Skyliner gives a list of other apps to run, in the thread above.
Anyhow, here's a link to a copy of my LimeWire jar file:
LimeWire.jar
If you still get virus alerts after this, might be a Trend Micro issue?