All I can suggest is what aguirRe already said... try sites like oldversion.com to see if they have any drivers for you there.
Seriously though, why can't you just use the latest release? It lists 9800 as one of the supported chipsets. The driver selection page is here, you can see that they have a driver available for your card:
http://ati.amd.com/support/driver.html
Unless you're not using XP or Vista, I don't see the problem. Note that if you are using windows 98/ME they also have a "legacy" option there in the OS menu.
It seems like you can't really go wrong.. I mean all they really offer is a full driver package that supports every card under the sun. It can't really get any easier than that!