This is a grand plea for help.  I am new to both ASP and ASP.NET.  

My Goal:

I would like to generate xml data on the server that will then be passed 
to a client side control (MS Excel Spreadsheet Control NOT .NET).  My 
current thinking is that I should be able to use the CodeBehind class to 
generate all the xml for the client side control.  Then, I want to pass 
the data to the client and have the control render the data.  My problem 
is that I have yet to find any way to communicate between the Client 
control and server side code.  Another idea that I had was to use a 
WebService to generate the xml and call that service from the client.  The 
only problem with that is that I will have to ensure that the SOAP Toolkit 
is pushed out to all clients.  Any ideas would be greatly appreciated.

Thanks,
Brian