Deploying Applications in VB.NET: Part 1/2

useful article. I was looking for an answer for-
how would I let the setUp re-install if an earlier version product is already existing.

The scenario is simple.-
I create a set up with Version - 1.0.0 & install it. I update the code [say cheange the text on the button], keep the version same i.e. 1.0.0 try to install. The installer pops up message saying -Already a product with different version is installed. Uninstall it.

So I need to uninstall before trying the new setup. Instead I want the set up to continue like providing an option repair etc.

Thanks in advance
Santosh