The IServer::Transfer method sends the current state information to a specified URL for processing.
HRESULT Transfer(
BSTR bstrLogicalPath //[in] A BSTR indicating the path
);
If the path you specify in the input parameter is for an .asp file in another application, the .asp file will execute as if it were in the application that contains the server.transfer command. All variables and objects that have been given application scope either by other ASP pages in the Application or by the Application's Global.asa file will be available to the called .asp file.
Server Object, IServer::Execute