While many people have made Firefox their default browser, it is best not to uninstall Internet Explorer as it is used for Windows updates.
After that, you'll either need to uninstall the software from your PC or pony up the $20 or so to purchase the full version.
You can't uninstall or "quit" your pet and if you neglect it it will be taken to a shelter.
If you do not like them, simply uninstall the program from your hardrive.
You can download the fix and easily uninstall it.
The program does not offer an uninstall feature.