Blocking IP addresses

I am fed up of files that turn out to be some advert for a site offering dubious pleasures! I don't wish to view *anything* drenched in *any* substance thank you very much. Now I know Limewire has a filter to block certain IP addresses, but that's no use if I can't find the address in the first place. I don't seem to have a location column to get this from!

Please help. My filter so far is to remove htm and asf files, and ignore those with different names but totally identical file sizes!