bpf with windows 7 IE 9

Hi BPC Friends

I had a laptop with windows xp and IE 8 and the link between BPF and excel it was very good, in the meaning that when I clicked on an input schedule or on a package in the web page automatically appear to me the excel sheet without the need to log on again on BPF Office client

Now that I changed the laptop and it has windows 7 and IE 9, when I click on a link in the web page appears to me the window with the application set and the application and I have to click ok before to see the excel sheet

Why?

thanks

Michele Medaglia