I wouldn't mind at all if this was a false positive but, the thing is "Why now?"
I've been scanning my comp w/ trend micro for a long time and did couple of days before mirco caught it.
And another thing, right now, there are so many of these links running around rampant on mirc. I've never seen so many infected ppl (ppl advertising, which they can't see).
Now, if I am not infected w/ anything then why was I advertising the infection borne link?
My guess is that this is opening a port (obviously). It's only a matter of time when he installs a trojan through that port. So, what I do is this; scan after I connect to mirc (don't have to scan the whole hd just till MT removes this thing.)