Access is denied error

Hi there:

  I am trying to connect to the integration service on our server but it keeps giving the error msg "Access denied". Our DBA has already added me into the DCom users group by following this article ( http://technet.microsoft.com/en-us/library/aa337083.aspx ) but still no luck . Do I need to be the local admin of the server on which IS is running?

 thanks

Hui