Just use a simple registry edit:
After backing up the registry, I suggest that you delete the entries by
following the steps given:
1. Click Start.
2. Click Run and Type Regedit.
3. Click the plus sign (+) next to HKEY_LOCAL_MACHINE.
4. Click the plus sign (+) next to Software.
5. Click the plus sign (+) next to Microsoft.
6. Click the plus sign (+) next to Windows.
7. Click the plus sign (+) next to CurrentVersion.
8. Click the plus sign (+) next to Uninstall
Then remove the desired program by clicking on the folder with the right
mouse button, choose delete from the menu and click on yes from the
confirm delete window.