Form not active after OLE call

Hi all,
My application call Word7 : Execute word basic instruction (create a
lettre and print it).

I have the following problem: when OLE calls are finish, my application
doesn't become active. for example the OnKeyPressed event from the
active form  doesn't work. The only way to make it active, is to click
on the form. The funny thing is that the Active property of the form is
set to TRUE. I have tried many things, but nothing works ...
What can I do  ????

Thanks for all reply