I Installed Thunderbird (mozilla firefox) for my business account only, well it seems to have taken over my computer, whenever I receive a attachment with outlook express, Thunderbird is the program that opens up the attachment, this is not the way I want it set up nor is it the way it worked before installing Thunderbird, also whenever I click on a *contact me* link it uses Thunderbird and I don't want it doing that, I want it back to using my outlook express. I have looked high and low for a solution and cant find it. under tools and options it doe not give me any mail options.
under Tools -> Options -> General -> Default Messaging Programs" In Outlook Express it says it is my default mail handler, yet whenever there is a attachment, yet it still opens in Thunderbird
Try using "Set program access and defaults" in the Windows start menu. If you need additional help you might try one of these Thunderbird support groups - http://www.mozilla.org/community/user-sites.html