xp_cmdshell

Hi,

I'm now having the same problem like the following link and can anyone tell me that the way from Vidar is to grant the use of "xp_cmdshell" to that database schema.
http://social.msdn.microsoft.com/forums/en-US/sqlsecurity/thread/f3b0a883-fb27-4512-ba60-5ce1bc030d46/

Further, here I can only choose that schema I want, right?
SELECT name
INTO #databases
FROM sys.databases
WHERE name IN ('mydb')