It looks like it is running Fedora 13 which its old enough to retire it. I
think that you should seriously consider starting fresh.

If you need data from it then you can likely retrieve it from a live CD of
a new distro. The distro will handle everything if you do not care about
data. It will format and use the whole drive installing a new distribution
of your choice.

Fedora is one of my favorite distros, but it is not for newbies.

I would suggest that you try something simpler such as Linux Mint or
PCLinuxOS.

You can also opt for one of the *buntus. My favorites are Kubuntu or
Xubuntu. You will find them both similar to Windows in appearance. The
first one has more features, but uses more resources.

If you want something entirely different try Ubuntu, the big daddy of the
*buntus.