Ralph,

You can
- run a VB executable that uses automation to control Excel, if you know how
to build activation code
or
- if your program has some VBA, or if you could write a VBA
activation/closedown routine, you could always purchase AppSentinel from
www.thescarms.com/appsentinel/default.asp which will provide all of the
functionality you could need in this area.

--
HTH

-------

Bob Phillips
... looking out across Poole Harbour to the Purbecks


"Ralph Roberto" wrote in message
...

hello excel people,
my question is. I have delveloped a small useful program
I would like to sell.perhaps one could download a trial
version that would expire say after 3 days or 10 uses. at
that point.upon payment I could send them an activation
code PROBLEM IS !!! I wrote the program in excel and I
don't believe excel has any of the features I mentioned
could all the data be exported to another program that
WILL provide me with the features above without too much
trouble

Thank You
Ralph