How do you switch your default action on attachments in GroupWise 8?

We have some users who are somehow having it set to "View Attachment" and they're asking us how to have it open in the native appliation (such as Word and Excel).

I've looked in Enviroment -> Default Actions, but the only option for file attachments is "Warn if larger than". I've poked around other settings throughout and have not seen anything that looks correct. I've even looked at the file property settings in Windows for those filetypes. I've looked around Novell's website and even looked through the Cool Tools to see if there was a program to help. I looked at View Designer just to see what it was, but apparently it doesn't work in HP2.