HELP Need assistance with uninstalling manually via registry editing

Ok, so my hard drive died...and it had Sins on it. Unfortunatly I cannot uninstall with conventional methods including add/remove programs and when I insert the CD it gives e the option to install. Clicking on it it asks whether or not I want to modify, repair, or uninstall the game. None of these options work becuase my computer thinks it is still on my external hard drive. I've gone into regedit and deleted the folder under HKEY_LOCAL_MACHINE/SOFTWARE/STARDOCK

It still won't let me uninstall or install and I get the same error message. HELP?!