How to tell the end of a shell

I have a VB6 program which runs shell which runs another program which in turn creates a file. As soon as I call the shell, I run a subroutine which essentially pauses the main program for a few seconds whilst the new file is created. I then use VB to open Word and read the newly created file.

This works fine when running from my hard disk but when I try to run it from a USB memory stick, the shell program takes several minutes to create the file.

I need to be able to pause the main program until the shell program has finished so I can then open the new file in Word.

Is there any way I can find out when the shell program has finished creating the new file?

Thanks
Chris
.

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