Theres a tweak to stop msn messenger. I forget how. I suggest doing a full virus and antispyware scan.
All you do is copy the link in the messenger. Then open a new tab in a firefox window and paste it into there. Or set it as yoru defult browser.
I think there are ways to get IE of your pc, but that's not smart. Some sites just don't work with firefox. Btw I'm a firefox addict myself
You cannot delete Internet Explorer. When you go to My Computer, it opens up a internet explorer window in there. All folders on your desktop are Internet Explorer.
YES you can remove internet explorer. Go in Add/Remove programs, press on Add or Remove Windows stuff (sorry my windows is in french lol), uncheck Internet Explorer and bye bye its gone.