Software :: Mail Is No Longer Working Properly?

I have the Mozilla Firefox web browser version 2.0.0.20 .

I clicked on a Google image of the NAFTA Super Highway and the picture at the site opened with Internet Explorer .

I didn't have Internet Explorer on the computer before this happened .

Since then Internet Explorer pops up after I go on line with the Mozilla Firefox browser .

I could not get it to stop, so I moved it to the trash and it is still being held there . This is what I removed .

Internet Explorer 5.0 SR-1
DivXWebPlayer.dmg
efa_manuals-1.pdf
efa_manuals-2.pdf
Internet Explorer
EULA
Images
Microsoft Internet Self-Repair
Contents
IEHelp.htm
Microsoft Internet First Run
DivXInstaller.dmg

Before this, I'd open my mail, click on an web address in blue type, my browser would appear and the web site would open .

Now in mail when I click on a address that appears in blue type , like this [URL]= = = = = = = = = = = = = = = = = = = =
ERROR

Mail was unable to open the URL [URL]No associated application
could be found .
= = = = = = = = = = = = = = = = = = = =

Do you know if there is a application missing, or could it be something else?