Have you got the right version? 64 won't work on 32, you'll need the 32bit download.

try dotnet framework update should have prompted you for the update when you installed it

DUH....lol...yes.

I guess you had to ask. But you'd be wrong.

10-6_vista_win7_32-64_ccc_lang1.exe

It did, and it was already installed.

Do you have Owner Ship of your PC 

this is the easy way to do it

Add "Take Ownership" to Explorer Right-Click Menu in Win 7 or Vista

after doing the above go to c:/ the ATI folder and right rick on it then ckick on Take ownership..

this is the TIME consuming way to do it

How to Take Ownership & Grant Permissions to Access Files & Folder in Windows 7

It may help

other tips that may help

get CCleaner if you don't have

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What does it say in Device Manager under Display Adapters (Start --> Control Panel --> Device Manager)? or Type (Device Manager) in search box 

If your graphics card is listed there, then uninstall the currently installed drivers. Then go to WindowsUpdate to install. Look specifically for ATI Drivers.

If your graphics card is not listed there, Run a scan for hardware changes. It should find the device and attempt to load drivers for it. Go ahead and let it. Then go to AMD's Driver page and download ONLY Catalyst Control Center.

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Run the catalyst driver again...this time instead of "install" select "uninstall".
This will run and will come back with "no ati components found". Hit ok to close.
What this seems to do is reset the installation. Now go to install again and this time select install and it may work this time. It may throw up an error about hardware detection.

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Are you able to point Windows to the driver afterwards?
Under the drivers tab click update driver > browse my computer... > let me pick... > have disk > then direct it to the LH6A_INF folder (If it is their) in the ATI folder in C:

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Try removing your sound card, Video card, etc. to other slots if any .. even if you only have 2 switch them around .. it should make the Bios re-look

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Windows Installer CleanUp Utility 7.2

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1.Go to AMD website

2.Downloaded and Saved to desktop the “Full Catalyst Software Suite
(Recommended)” for your PC and suitable for Win 7 64-bit operating
system (For now, it's ATI Catalyst latest version

3. After saving the full Catalyst Suite desktop, next, Downloaded/
Installed/Opened Ccleaner

4.Clicked Analyze. on the registry tab

5.Ran Cleaner to delete the analyzed files.

6.Rebooted PC.

7.Opened Ccleaner again after reboot.

8.Clicked Tools (left column).

9.Clicked (highlighted) "Catalyst Control Center" (if available on
your system) and clicked Run Uninstaller (right column).

10.When uninstall was completed, then next, uninstalled "ATI Catalyst
Install Manager".

11.(if "Catalyst Control Center" is not in Ccleaner, go directly to
"ATI Catalyst Install Manager" and uninstall it using CCleaner as
in #9 above).

12.NEXT, opened “Full Catalyst Software Suite” that you downloaded to
desktop earlier.

13.UNINSTALLed everything by checking the “UNINSTALL” button ... DID NOT
install yet ... there are still elements, like driver, not cleaned out
yet by Ccleaner. Followed the steps of the Catalyst Suite and uninstalled
everything, including the driver.

14. When done, rebooted PC.

15.Again, as in #12 above, “Full Catalyst Software Suite” that you
downloaded to desktop earlier.

16.This time, INSTALLED the whole Suite by checking the INSTALL button ...
installed everything.

17.Rebooted and my Catalyst Control Center may work

hope something here may help

Done all that. The driver is installed and working properly, CCC is installed and won't run.

Update.  I got my second monitor back, and while CCC still won't run, adding back the second monitor has somehow removed the border around my screen. So all is well for now, going back to nVidia as soon as I get my card back anyway!