As you can see, Firefox doesn't have a configure file. You've already been told earlier on in this thread (by slack_prad) that not all tarballs contain source. The tarball for Firefox that you downloaded contains a binary, so you can just run that (provided you have the required libraries installed). The Firefox source code is also available, though.
Originally Posted by _GOGO_
how can i install GCC with no ./configure command working
The GCC packages only depend on configure if they're source code, i.e. need to be built (obviously, they'll also require a compiler). You can just install a pre-built package for your distro (e.g. RPM, .deb, or whatever it is that yours uses).
Edit: I hope you're not using the root account all the time :/.