Unfortunately that is known problem:
http://support.microsoft.com/default.aspx/kb/930056
You can now however as of 11th January ask for a HotFix that gives you the
icons

it will be in teh Vista Service Pack 1
http://support.microsoft.com/default.aspx/kb/930056
"LWWilks" wrote:
> I recently changed machines from Vista Enterprise to Vista Business. Have
> reinstalled all the MS admin tools, now when I look at user account
> properties in ADUC on Vista Business box it is missing several tabs, Terminal
> Services, Additional Account Info, Dial in. If I use the Vista Enterprise
> these items are available. I installed the Server 2003 Admin Pak SP1, Server
> 2003 Resource Tools, and registered all .dlls that I registered on VE box
> from my build notes from 12 months ago. Any additional suggestions?