If you're using InstallShield, why don't you let it handle all this?

>That is somewhat of a problem because the application is already distributed. I am working on an update to the current app. Install Shield would be my first stop in the package.
>
>I am open to another option. I can provide the OCX file in the application folder and all I need to do is have the prg check to see if it is registered, if it is not then I will register it for them and continue the prg. Does anyone have any example code on how to scan and register an OCX file on a client machine?