🚀 go-pugleaf

I realize this may be a long-shot, but here goes:

I have a C application for OS/2 v1.3 Presentation Manager that sends data
to Microsoft Excel v3.0 via Dynamic Data Exchange (DDE).  I am able to 
accomplish this 100% of the time when only one copy of Excel is running on
my workstation.

When two or more copies of Excel are running, I want to be able to send data
to a specific instance of Excel.  In the Excel User's Guide, on page 344,
the directions suggest appending a "Task Identification Number" to the
DDE name ("excel") when initiating a conversation with Excel from another
application.

The Excel Function reference guide mentions that the macro "EXEC" will
return this task ID.  However, under OS/2 it only returns a zero.

My questions are:

1)  what is the "Task Identification Number"

    a)  if this number is really the OS/2 process ID, then when I append
        this ID onto "excel" and use this as the DDE name when I initiate
        the conversation, I am not able to establish a connection.

2)  How can I obtain the "Task ID" if it is not the OS/2 process ID

3)  If I can't single out an instance of Excel using these methods, is
    there an alternative method?

Thanks for any input.

Mark Chaloult
voice:       517-788-1181
Compuserve:  70621,1356
Internet:    benjo@eecs.umich.edu