Setup and Deployment ?

Giganews Newsgroups
Subject: Setup and Deployment ?
Posted by:  Terry (TerryCLa@nospam.nospam)
Date: Tue, 26 May 2009

Is there a way to change the behavior where by the the setup forces the user
to uninstall the prior version before installing this one?  The program deals
with payroll taxes and most of the time there is just a single dll that is
changing.  I grant a 'site' license and when I ship out a update, it is
complete since I never know if it is going to be used to install on a new
computer or simply update an existing installation.  I send out multiple
updates in a year, and do not want the users to have to uninstall every time.
Is there some way to get around this?  Do I have to go to a third party
product like Wise or Install Shield.  I use Wise now for the existing VB6
version of the product.