Default Safari email client

Question

I get and preview some email using a webmail account before actually popping it into an email client.
One of the webmail options is to save the email directly which I had never done before.
Curiously, when I saved it, it downloaded and then opened my unused Microsoft Office 2004 and forced me to save it in Entourage. I never wanted to "test drive" the MS Office prouct, but now I am.
My real question is how to set the default Safari email client to my Mac Email?
I am not sure if my webmail service automatically looks for a MS client first but there are no setting there. It seems to me that since I am using Safari, the email client should be user-selectable.
It's not clicking on an email-to link, which works fine, but this is saving an email directly from a webmail account in Safari, and for some reason MS Office email was the default client.
I could delete the MS office trial and see what happens, but I would like to know if it is possible to set the default "save email to" link.
Dual G5 and MacBookPro   Mac OS X (10.4.8)  

Answer 1

Yes, I could pop it with Mail, but that's not the point. I eventually pop all my webmail onto a PC which contains all my email stored in Outlook, only because I started out using it.
When I do a "save as" using my webmail account directly, the extension of the downloaded file is .eml.
I did as you suggested and right-clicked it, selected "other" and chose Mail.app
The mail then appears as an attachment in Mail and when I click on the attachment, Entourage opens again.
I can only surmise that the webmail software, which I cannot control, uses MS as the default encoding for downloading. I don't know when the .eml extension is assigned but the encoding may simply be the result of the original sender's client. It makes sense that if the sender used MS to send the email that my webmail does nothing so the format of the email remains that of MS office.
That makes sense to me.