Using Word/Excel SendKeys command from Delphi

Hi

I'm stuck and would really appreciate your help. How can you use Word's Sendkeys from Delphi?

I can't seem to make it work... I tried to do something similar with Excel. It doesn't work either :-(

Thank you very much in advance!

Regards,
Jay

var WordApp, WordDoc: Variant;
Begin
   WordApp := CreateOleObject('Word.Application');
   WordDoc:=WordApp.Documents.Open(FileName:=FN);
   WordApp.SendKeys ('Hello', True);
   ...
   WordApp.Quit;
end;