Somehow when I installed the latest version of Firefox I lost the ablility to input websites that I want to visit. I don't know the browser very well and I would like help configuring it.
If you're missing the address bar (where one types website names), try VIEW > TOOLBARS > NAVIGATION TOOLBAR should be checked.
This is for the 3.x versions.
What version of Firefox are you using?
The latest stable one is v3.6.15 but the newer Firefox 4 will be released very shortly.