My "Track URLs" doesn't appear to be working. Perhaps a result of my environment - see below. I've tried both an old licensed copy of mirc 5.91 and a recently licensed copy of mirc 6.35. Neither make any sort of attempt to load a browser, or a new browser window/tab with either MSIE or Firefox.

Windows XP Pro SP3 w/ Licensed copy of XPUnlimited
MSIE 6 Unpatched (and unused!)
Firefox 2.0.0.20
AVG Anti-virus 8.5
Windows Firewall ON
mIRC 5.91 and mIRC 6.35

Please accept my apologies if this has already been answered. I did spend some time digging through old forum posts, but didn't find anything except for people who had somehow enabled "Track URLs" and did NOT want it.