Well I haven't had this worm, but I guess you'd:

Right click on the alcanshorty link. Choose 'save as' & when you get the option of where to save it, choose C:\BFU.

Here's the shortened version
http://www.gnutellaforums.com/showpo...&postcount=150

If you don't know how to reboot into safe mode
http://www.pchell.com/support/safemode.shtml

And from then on it should be pretty simple...see how you go & post back if you're still in trouble.