Just got Red Hat 9 dual booting with XP, and everything looks good so far. I am new to Linux so could someone explain downloading files and programs, compared to windows. First I just want to download the latest version of Mozilla and install it.
Help a Newbie please. Thanks in advance

exact same as in windows...
open a web browser go to the http/ftp site and download what you wish...

its the installing bit thats different

Installing can be quite a bit different, depending on how you get the file, where you get it from, and the form it comes in. In linux it's not always as simple as:
Click the 'Setup.exe' and click next 3 times and go.

Instead, check out:
http://www.linuxquestions.org/questions/answers.php
There's a how-to on installing software. There should also be some documentation from RedHat:
http://www.redhat.com/support/resources/howto/rhl9.html
That might help to figure out how to install certain types of software.

And a few ideas on where to go to get software:
Number 1: Your install CD's. Search those for any packages you are looking for, a lot of the time, it's right there.

Then:
www.freshmeat.net
www.freshrpms.net
http://sf.net
www.tucows.com

And of course, google.com/linux for the homepage of the software vendor if you cannot find it otherwise

Cool