To help solve a problem I was having, NLS's Anna just sent me instructions on how to delete all files in a folder that have the same extension. I used to use such a command in DOS, but I didn't realize there was a simple version of it in Windows. In case I'm not alone, here's what you do:
>From the folder, type F3 to bring up search. Type *.file extension (that is, whichever file extension it may be, such as .MP3, .ZIP, etc.). The list will appear. Delete them by pressing Control-A for Select All, and then pressing delete. For answers to frequently asked questions about this list visit: http://www.jaws-users.com/help/