The error is pretty self explanatory: you cannot use "
Integrated Security=True" with that connection, you must use a valid SQL database username and password combination that has appropriate permissions for the specific database you are trying to access.
So instead of
Data Source=localhost;Initial Catalog=MyDb;Integrated Security=True
You need something like:
Data Source=palm.MyHostingService.com;Initial Catalog=MyDb;Persist Security Info=True;User ID=MyUserName;Password=MyUserPassword