There are certain file extensions that you should NEVER open - even if you haven't been warned.

.vbp - visual basic project
.scr - script files or screensaver
.bat - batch files

If you are not sure what a file extension is, the best choice is not to open it. You can go here to check out the definition of any file type:

http://www.computeruser.com/resource...filetypes.html

Kathleen