The sure way to tell is to compare the dates on those file between a machine with SP3 and without SP3.

>I've to create a new setup (with InstallShield Express) to release an update of my application, in this release I'm using the ServicePack3 of VisualStudio.
>
>My question is: Have I to distrib only the new VFP6's DLLs or have I to distrib other files like MDAC_type.exe to install MDAC 2.1 ?