|"Do I want to keep Modzilla if I'm use google Chrome and not Internet Explore?"|
If you mean Mozilla Firefox then it is an alternative browser (like IE and Chrome), so whether you keep it or not is at your discretion. It won't do any harm if it stays but it does take up space. If you want to remove it go to "Control Panel > Add-Remove Programs", find it on the list and uninstall it.
Always pop back and let us know the outcome - thanks