Updating a driver for ATI graphics card

Can someone help me? I'm not much of a computer person but I believe
I'm having difficulties with the driver for my ATI Radeon Mobility
9200 series graphics card.

I'm using an HP pavilion zt3010EA notebook, which suffers from crashes
and ati2dvag infinite loop issues, particularly when playing World of
Warcraft.

I've downloaded and installed the latest drivers available from the
hp.com/support website but nothing changes. when I go to the ATI
customer support website, they have drivers to download for Radeon
Mobility 9600 series and above, or Radeon (no mobility) 9200 (which
doesn't seem to support that series anyway) but nothing for older
drivers. I have emailed them about it but they send a canned response
which doesn;t actually address any of my issues.

Any ideas?

Thanks