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Had a problem with hijacked browsers. Got it cleaned, Firefox will not open or un install. I want to remove existing and install a "clean" one.

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Browsers were hijacked, found and quaranteened(sp?) the bugs, Mozilla will not open from the desktop, Programs. Tried to un-install either one-no joy. Want to use Firefox again, thought I could uninstall and reinstall "Clean" versions. If nothing else, since I can't use Mozilla, want to remove them permanently.

Browsers were hijacked, found and quaranteened(sp?) the bugs, Mozilla will not open from the desktop, Programs. Tried to un-install either one-no joy. Want to use Firefox again, thought I could uninstall and reinstall "Clean" versions. If nothing else, since I can't use Mozilla, want to remove them permanently.

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http://kb.mozillazine.org/Uninstalling_Firefox#On_Windows

Start here for manual removal instructions:
Even if the uninstall fails, as it may in some cases, continue on with the rest of the uninstall instructions.