menu in explorer

HI,
i build a VBScript that adding button to the internet explorer toolbars.
and when press the button it open a vertical menu in the left of the explorer window.

now i neet to put the application there and make interaction between the applicaiton and the content window.

my application is wrote in VB.NET but the VBScript that i wrote is open in the side an HTML page.

how can i reload there the VB.NET application and how can i interaction between the left side window (where the application) and the content window( the page of the explorer)

thanks a lot...