You could try re-installing the game, to see if that will over-write whatever is causing the problem, and fix the uninstall.
Alternately, you can just delete the Divine Divinity folder and all subfolders. There is a small registry entry that you can also delete, if you are comfortable editing the registry, found at;
HKEY_LOCAL_MACHINE\Software\CDV Software Entertainment AG\Divine Divinity
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BTW, there are separate forums for Divine Divinity and Beyond Divinity. If you posted in the right forum but 'DD' was a typo, you may also want to
uninstall the StarForce drivers used by Beyond Divinity.