I have an app in VB 6. It works fine with Windows 2000 Profesional OS and Windows 2000 Server. But if client machine is Windows XP and try to connect to SQL server 2000 on Win2003 Server with DomaiUser name it gives me an error that connection cannot be establish with current username. When I make Login account on SQL Server with that Domainusername than it works. Also my app call reports made in Crystal Report 7.0 and it works fine with administrators username but if Domainusers try to use it it gives me an error something like that some DLL is mising. Anybody have experience with it? Please help