Attached Link: http://www.litepc.com

You can certainly install any other browser. I have Firefox installed in addition to IE, though I don't use it much. IE is pretty integral to Windows. There are a lot of functions like HTML help files that use it, as well as others. Some software, especially from Microsoft won't install if it doesn't find IE. My advice would probably be to go ahead and install another browser, make it your default (it'll probably ask the first time you run it) and leave IE in place. If you really want to get rid of it, this is the place you need to go (link). They have a freeware program IEradicator that is supposed to remove IE. It says from an "unmodified" installatrion, I'm not sure what that means. They also have other programs that will allow you to remove various parts of Windows to supposedly speed it up and make it more reliable. I haven't tried any of these but they've been around for awhile and are constantly developing new stuff so it might be worth a try.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken