Catalyst control center is not supported by the driver

Now I had this problem before but I got a dell technician to fix it. Apparently my hard drive was the problem and so they got me a new one.
But now am past warranty and this problem has cropped up:

WARNING
The Catalyst® Control Center is not supported by the driver version of your
enabled graphic adapted. Please update your ATI graphic driver, or enable
your ATI adapter using Displays Manager.
I don’t have tech support now.
So what else can I do?
