Forcing an install over a previous version
 

I would like to reinstall the ppc visuals dusk taskbar because one of the icons was replaced by another cab.

I get the message: "the previous version of ppc visuals dusk taskbar will be removed before the new one is installed"

Then after OK I get: "the previous version of ppc visuals dusk taskbar cannot be removed"

Because of this, it will not reinstall the taskbar.

I've deleted every file that totalcommander could find with dusk in it. I've gotten rid of every key that either has dusk in it or that I can see from setup.xml that the installer put into the registry.

How can I convince the installer that the program had never been installed before?

Thanks a lot in advance.