First you need to untar it:
If it is <package-name>.tar.gz use:
$ tar xzf <package-name>.tar.gz
If it is <package-name>.tar.bz2 use:
$ tar xjf <package-name>.tar.bz2
If it is just <package-name>.tar use:
$ tar xf <package-name>.tar
now 'cd' into the directory that is created. There may be a file called README. You should read it. There may laso be a file called INSTALL. You should read this too. If you still have problems after this then post again with what you tried and how it failed on you.
PS: This forum is for introducing yourself. You should not post technical questions here. Please use a more appropriate forum in the future.
PPS: Your thread title is terrible and is not condusive to getting you any sort of decent help. Please read this for reasons why:
http://www.catb.org/~esr/faqs/smart-questions.html
PPS: Redhat 9 is old and unsupported. Is there any reason you cannot install something newer? I bet if you tried Fedora Core 4 instead your SATA drives would work out of the box...