Error 26009. Could not Access the datastore using the DSN File

Dear Buddies,
I am using Windows Server 2008 (64-bit) and have been trying to use Citrix XenApp 5.0.Besides SQL SErver 2005 is used in my environment.However I have not been able to access the datastore using the DSN File.Not too sure what the issue is here.

Citrix XenApp 5.0:
Error 26009. Could not Access the datastore using the DSN File, Username and Password given function UseFileDSN returned failure in CTX_IMA_Silent_ODBC.
