My antivirus found a potential virus threat. It pointed to a word document I created a while back. Insead of being a .doc it is now somehow set to .shs. What is this and how do I get rid of it?

You can find more information on the extension here: http://filext.com/file-extension/SHS

Basically it can be created by moving an embedded object, in say a word document, from the document itself. This is a tricky extension because in a normal explorer window it can hide its extension and CAN execute malicious code. Best thing to do is delete it.