I've created an example that I believe to be the makings of a .Net equivalent to the Java proxy. You can find it here [1]. As always, your actual mileage may vary...
Jim [1] http://www.gotdotnet.com/userfiles/JimSievert/Interposer.zip You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.