There are multiple packages included with RH8 that are related to MySQL or are the package itself:
# rpm -qa | grep -i mysql
At the very least you need the first 2 and mysqlclient probably. You technically don't need any additional RPMs or packages/files from mysql.com or anywhere else. This *is* MySQL pre-compiled and packaged by the RedHat folks and is included in the RH8 CDs you probably already have...
There's been lots of discussions of MySQL and RH8 on here recently. You might want to do some searching on here in some of the other forums...