T-ball

I have tried reinstalling my old and original Firefox version, 2.0.0.7 multiple times. When I do, theres no message asking for me to update it and when I do go searching for an update using the 'check for updates' it says there was an error downloading the patch. I have also tried installing the latest version posted on the Firefox website, however, the same issue has occured; no websites load whatsoever. As for uninstalling the update, I do not know specifically which update is causing the problem. I am hoping someone out there knows which, if it is.

Thanks