Need to uninstall unrelated application before installation Installshield 2010
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apologies in advance, I am still an Installshield newbie! 

I am currently using installsheild 2010 for an isntall packed for my application (ds2). My trouble is I need to remove a previous incarnation of that project which was created with an installshield 2008 as a merge module (ds1), not a installer in its own right.

So the old version  (ds1) is currently lacking in upgrade code etc, and only has access to a Product Version and Package code.

The new program has the usuall Upgrade, package, product codes (ds2).

Is there anyway to either associate the old product mergeModule to the new application so it can be uninstalled as a 'previous version'. Or is there another method where i can ask installshield to "remove anything with product code xxxxxxxx"

I hope that's clear enough for a response!
Thanks in advance