When I use webmail, attachments come at the top of the message as hyperlinks.
If I click on them, I get an error message that I must first save them
before I view. If I right-click and open in a new window, they open without
saving. However, they don't launch Excel, but rather use an
Internet Explorer window.

I know there is a way to get attachments to either launch Excel or just open
in there if it's already running. My old computer was set up that way, but I
just switched jobs and can't remember what I did. I think it is either an
option in Internet Explorer or in Windows Explorer where you specify file
types open with ...

Can anyone help me out?

Thanks,
Jane