Hi Carol,

The best way would be to use MS supplied merge modules or packages.

>I have been looking for information about Install Shield Express behaviour when installing updated dll's.
>
>Does it overwrite old dll's?
>Does it warn you first?
>How do you control the behavior?
>
>Background: I have created an install that lays down the basic VFP support libraries and the odbc driver for VFP. I want to add the dll for SQL server too, but I want to make sure this is working before I add that in.
>
>Any info about how it behaves would be great.