This Microsoft FAQ on Excel's RTD may help:
http://msdn.microsoft.com/library/en...c_xlrtdfaq.asp


"Boon" wrote in message
...
I am just wondering whether we can use Excel as a RTD
Server; if so, how?
All the documentation is about writting a program that
pushes data into excel, but we want excel to push real-
time data back to our program.
Any help will be appreciated, thanks!

Regards,
Boon