Removing existing reg. entries on uninstall

[johnfield]

Hello,

I have an msi built with wise. When the uninstall option is run (from arp in cpanel) I want to remove a registry entry. That's easy I hear you say, well, the catch is, the entry is put there by a different app. It won't be auto removed by running my uninstall. Anyone have any ideas how to do this?

(I know this sounds a crazy thing to do but there is a good reason - honest!).

Thanks

John