Hi,
Is it possible to capture( possibly modify) the traffic in the proxy before sending it to the web server and similarly capture the response from the server and modify it before writing back to the browser.

I am using VS 2005 and .NET Framework 2.0. Do I need to downgrade to framework 1.1? I compiled the proxy and it gives run time errors.

Please reply soon..

You have access to the buffer before sending it the remote host and after receiving from the remote host; you can modify examine etc. before sending it out or before sending it to the client(In the functions OnRemoteReceive and OnClientReceive).

please use this :)
protected void OnRemoteSent(IAsyncResult ar)
protected void OnClientReceive(IAsyncResult ar)