Will downloading mozilla change the look of the computer-meaning the toolbar above? Can it be uninstalled so that I start from scratch?
Mozilla works very much like Internet Explorer. It also allows you to import all of your bookmarks once you install it. Set your default browser to Mozilla the first time you run it and tell windows to not ask you again.
Yes it can be uninstalled later on if you don't like it. But I can almost assure you that after using it for awhile, you'll never go back to IE.
The first time you run Mozilla or firefox it will ask you if you want to import from IE. You have the choice. Yes it looks a little different, but it is very simple to use. There is also something called extensions that you can download from within the tools menu of the browswer itself. These will let you add features. For instance...I am told that newer versions of IE have something called a "Google Toolbar". Well You can download that for Mozilla as well and it will be right there at the top of your browser. Another consideration...if you have a dialup....Firefox is much smaller. around 5 megs.