Change File Associations for LNK file?

A co-worker must have changed the file associations for ".LNK" shortcut files. All the shortcuts on her desktop are now the wrong icons and all try to start Windows Media Player, when clicked on.

I'd like to change the file association for .LNK files. It seems straightforward to change this. I go to Control Panel, then click "Associate a file type," then find the extension, which is listed; "LNK"

The problem is: What do I change it to? It's a shortcut, so it's for different applications. On other computers, says "Unknown Application" and that works fine. However, now that it's set to something, I can't find any option that lets me set it back to "unknown" or delete the wrong association.

How do I set the right association for "LNK" file types, or otherwise fix this problem, for Windows 7 Professional?

Thank you,
Bill

That worked! Thank you.