Getting Shell Task ID from lost process

[gargoyle60]

I am experiencing problems when using the Shell function in that
periodically the returned task ID connection is lost.
The external task/application launched via the Shell is still active,
but the task ID becomes invalid.

I seem to remember that somewhere in Access there used to be a way of
scanning all active processes on the machine and interrogating their
details in order to "grab" the appropriate process again. However, I
cannot remember the technique or the add-in that does this.

Can anyone remind me of the technique please?

Thanks

I am using Access 2003 on Windows XP Home