I came here to post this same thing.
I have a new laptop, a Dell Studio 1555 with an ATI Radeon Mobility HD 4570. I run the Catalyst installer, and it does its little detection thing, then only offers to install the VC++ runtime and the Catalyst Installation Manager. Doesn't list Catalyst Control Panel or the display driver. It's almost like it's not detecting the hardware.
I've tried uninstalling the Microsoft-provided driver first. Rebooted. Ran as admin. Etc. Etc.
Windows 7 RC x64 Build 7100
Intel Core Duo T6600, 2.2 Ghz
4 GB RAM