1.I guess I'm a bit lazy to go through 27 pages of Q&A everytime,so I thought posting a new question might be quicker for my frustration level...yet I don't want to be put down by the more experienced users ..only to pick the brains and hope to 'master the system'somewhat as I move along...
2.Please explain what's happening with the following print out after I typed in the command(#cp /home/WinHo/desktop/firefox-3.0.3.tar.bz2)....the print out says(missing destination file operand...)..I get repeated 'reminder' about missing destination file operand..
even working with firefox 2.
3.what steps should I take to correct the command and proceed to installing ff3 or any other downloaded files for fedora6.Again thanks for your patience and understanding.

First of all, the copy command ( cp ) you have to specify the command, you have, you have to specify what you want to copy, you have, and then the target, where you want the file copied to; you have not specified a destination. This part;

is the path from the root directory to the file, and the file name.

Add the destination directory to the command, like this #cp /home/WinHo/desktop/firefox-3.0.3.tar.bz2 /opt/firefox/

now the directory /opt/firefox has to exist, if not, and that is where you want the file, then you would have to use the command mkdir to create a new directory.

The ff3 install file is a binary archive. You need to decompress and extract the files. There are instructions on many web sites on how to install FF.

Most software for Fedora is in .rpm format. Those files are installed with Fedoras package manager.

Once you have the archive copied to the desired directory, change to the directory you copied it to, then run this command. This is assuming it is FF3, not a later version. If it is a later version, simply adjust the name of the file to match.

You can run FF from the command prompt or create a desktop icon.

Whilst it's not up to me to advise what you do with your own systems in Fedora terms F6 is very very old and you're probably not getting the security updates that you deserve. You would be wise to look at moving to F9 (current) or at worst go for F8 which has a bit of a support life left until you're happy to make the move to F10.