Delphi 7 SOAP身份验证和SessionID HowTo

I am developing a 3 tier database application. 1.) MS SQL DB 2.) Middle tier SOAP Server (with Delphi 7) connected to the DB 3.) Clients (first win32 gui (with Delphi 7) - later other platfomrs) connected to the SOAP serverI am developing a 3 tier database application.