I have a protected, hidden folder. (It has to do with the sound.) There is a virus in there that I cant get out. How can I "unlock" this folder? I am the only user on this comp.

Open up the general folder display options, go to view, select show hidden files and folders. Refresh the dispaly after selecting and applying that to all files and folders.

Find the hidden folder, right click on it, turn off read only.
Now scan the folder by right clicking on it and scanning it with your Antivirus. It should now be able to remove it.