Checking multiple application instances.

Hello,

I have a question about multiple application instances.

I've made it work so far to check for the multiple application instances
using
CreateMutex(nil, false, 'MyApp')
Whenever this creating fails the application wil stop and a message will
be sent to the already existing instance so the form wil be restored,
but how can i send a parameter to this instance/form.
Like to be intercepted with paramstr or DragQueryFile.

Sincerly,
Kasper de Jonge