Hi People, Can anyone help?

I would like my macro to detect whether other excel applications are open on
my PC. As far as I can tell there is no applications collection ao I'm
guessing (!) that it'll necessitate an API call? ...which leads me to my
second question: is there any literature that gives a good overview of the
api - I'd like to become familiar with it but the on-line documentation on
the msn website is a bit daunting!

Many many thanks in advance

Noel