I'm using my ATi 3D Rage Pro card with Red Hat Linux 9 and it works very well.
Which Linux distribution you use?
Linux is a kernel and its last stable verison is 2.4.23 There is no Linux 7.2. It may be Red Hat Linux 7.2 you use. Red Hat is one of Linux distributions. Mandrake is other. All Linux distribution use same Linux kernel. Only version numbers can be difference.
If you are a new user, I think Mandrake or Red Hat is for you. Here are some distributions and their last versions
Red Hat Linux 9
Mandrake Linux 9.2
Slackware Linux 9.1
Debian Linux 3.0
please visit www.distrowatch.com
and check the distros which you interested in.
And welcome to Linux world. You are in so so big community. Here are thousands people ready to help you.