I am trying to install full version of MO 2007 on my Windows 7 -32 bit, but it shows Error: "Office12 doesn't support upgrading from a prerelease version of Office12. Please uninstall any prerelease versions of Office12. Then re-run the set-up". I had a trial version of MO 2007 which expired. So i manually deleted MO 2007 trial version through Control Panel. But the error message still persists. Any ideas would be appreciated!