Currently, our "Server Side Validation" support uses the proxy server settings enabled for "Internet Explorer" browser on target machines. Can you please give us more details about the feature you request? Do you want to be able to specify in your project a proxy server address (and port number) to be used by the "Server Side Validation" support at install time? Or do you want to be able to specify at install time a proxy server address to be used by the "Server Side Validation"?