Sophos Antivirus Question

I'm getting a prompt that my antivirus has detected a virus in one of my files and denied further access.  I think it's a windows media file.  Anyway, that's all fine and good, but how the hell do I delete it?  It keeps prompting me but when I open Sophos it has nothing there that allows me to delete a virus.  Where do I click to destroy this sucker?