Hi , like i said i have VPS plan but on this plan the plsek sofware does not support MsSql , the stuff that host my website told me that they will not support anything that invovled to MsSql so ... what i was doing till now ? i download SqlExpress 2005 on the remote machine . and i can login to the Database engine using Windows Authentication , also , i have 'webs develeoper express' (asp.net) on my PC and also have SQLExpress 2005 - when i run my website on my PC i successfuly insert some data into the DataTables . but when i run the same file on the VPS (after i upload them using FTP) that does not work and i see this message : Cannot open database "horse" requested by the login. The login failed. Login failed for user 'VE326\IWPD_4(main)'. my connectin string on my "DBLayer" class looks like this : connString = @"Server=(local)\sqlexpress;Integrated Security=True;Database=horse"; ANY IDEA ??? thanks .