Hi Andreas
This ShellExecute function does work for the 32 bit application but not work for the 64 bit application . Do I have to do something different for 64 bit ?

I notice that you created a new Q&A post to ask this question, Jalil, which is the right way to ask a new question. There are several responses to your question in that thread.

Hi John ,
yes I came across this post and post my question but no response so decided to put up as new Question
BTW I am very grateful for your explanation and other responses by the co-workers in that other post. really appreciate your guys time and effort .
Thanks very much . keep doing the good work