If you haven't found out, the Windows Server 2003 Admin Pack does not work on Vista. This can be annoying for sys admins that aren't lucky enough to have Server 2008 installed everywhere. Luckily, there's a quick fix

1. Download and install the Server 2003 Admin Pack
2. Copy and and paste the following code into notepad and save it as "Adminpackfix.cmd" or something like that
   @echo off REM RegisterAdminPak.cmd REM (c) 2006 Microsoft Corporation. All rights reserved. set filelist=adprop.dll azroles.dll azroleui.dll ccfg95.dll set filelist=%filelist% certadm.dll certmmc.dll certpdef.dll certtmpl.dll set filelist=%filelist% certxds.dll cladmwiz.dll clcfgsrv.dll clnetrex.dll set filelist=%filelist% cluadmex.dll cluadmmc.dll cmproxy.dll cmroute.dll set filelist=%filelist% cmutoa.dll cnet16.dll debugex.dll dfscore.dll set filelist=%filelist% dfsgui.dll dhcpsnap.dll dnsmgr.dll domadmin.dll set filelist=%filelist% dsadmin.dll dsuiwiz.dll imadmui.dll lrwizdll.dll set filelist=%filelist% mprsnap.dll msclus.dll mstsmhst.dll mstsmmc.dll set filelist=%filelist% nntpadm.dll nntpapi.dll nntpsnap.dll ntdsbsrv.dll set filelist=%filelist% ntfrsapi.dll rasuser.dll rigpsnap.dll rsadmin.dll set filelist=%filelist% rscommon.dll rsconn.dll rsengps.dll rsjob.dll set filelist=%filelist% rsservps.dll rsshell.dll rssubps.dll rtrfiltr.dll set filelist=%filelist% schmmgmt.dll tapisnap.dll tsuserex.dll vsstskex.dll set filelist=%filelist% w95inf16.dll w95inf32.dll winsevnt.dll winsmon.dll set filelist=%filelist% winsrpc.dll winssnap.dll ws03res.dll for %%i in (%filelist%) do ( echo Registering %%i ... regsvr32 /s %%i ) echo. Echo Command Completed
3. Run the script as administrator and you're set

External Links

http://support.microsoft.com/kb/930056 - KB article about this subject. Gives you more specifics than I go into.
http://www.microsoft.com/downloads/details.aspx?familyid=e487f885-f0c7-436a-a392-25793a25bad7&displaylang=en - Server 2003 SP1 Admin Pack