Most people will get the latest catalyst driver instead of using the driver provided by the laptop/computer manufacture.
Latest Catalyst (on feb 2012) : 12.12 win 7/vista 32 and 64-bit : Download
Generally here is the most stable catalyst driver version i found so far:
Ati catalyst version 11.2
ATI Catalyst Version 10.12
1. Compaq/HP Model:
The driver provided by compaq/HP is sp50231.exe
But direct installation normally don;t give a max resolution (case for HP G62) so you need to upgrade the BIOS version to F28-F29, install Intel HD 3000 (swicthable graphic) and turn off power play in CCC. ( not recommended to use this driver )
2. Acer Model
VGA_AMD_8.741.1.5000_W7x86W7x64_A.zip : Download
Support : Radeon HD 5470 Radeon HD 6370M
This driver only applicable for acer (4738G etc) and Acer didn't allow to use with non-acer product.