FC3 default installs firefox, so if your using that to navigate and you download an rpm for the FC3 distro (its pretty standard, at least that i've found, that theres a pre-compiled rpm for you) then you can simply choose to open the file with the system installer and your all good. it downloads the file to a tmp folder, prompts you for the root pw, then goes ahead with the install. but yea, like he ^ said, your going to want an rpm..
if you wanted to manually install it, then save it to a location and then what I type is:
although you'll probably want to login as root first to install it as your going to need to do so 99.9% of the time:
it wont show in the terminal that your typing the password, but you are.
and then if you do download a file that you need to compile, then usually the process would be more like:
./configure
make
su
<password>
make install
because the file will probably need to install something to a directory that your user accounts doesn't have permissions for.
hope this helps


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