Cannot disable network browsing using Win 2008 TS and a Win 2003 A

[Guest E.F.A.]

We recently upgraded to Terminal Services 2008 (from TS 2003) and have a Win

2003 Active Directory Server. We noticed that the users of our application

now have the ability to browse our network (sound the alarm!!). The group

policy for our TS users restricted the users from browsing the network

(through an application common Dialog) in TS 2003 but this setting does not

seem to be recognized by our Win 2008 TS servers. Is this a bug or have a

overlooked a new setting required for TS 2008?