Firefox won't load because it says that my computer is missing MOZCPP19.dll file

For some reason when I restarted my computer today it did a hard drive check and I'm guessing that in all that mess some file for Mozilla Firefox got deleted. When I try to open Firefox it brings up a box that says "firefox.exe-System Error" and it also says "The program can't start because MOZCPP19.dll is missing from your computer. Try to reinstall the program to fix this problem." Please tell me how to recover this file, or how to fully uninstall Firefox, so I can continue using Firefox.
Thanks,
Derrick

Download a fresh copy of Firefox ( http://www.mozilla.com/firefox/all.html ) and do a reinstall of Firefox over the top of the current version.
If that still causes the same problem then do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
You can skip the step to create a new profile, that is not necessary for this issue.
See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

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