If you haven’t done so already, download and install the AdminPak specific to your domain controller:

Windows Server 2003 Service Pack 1 Administration Tools Pack

Windows Server 2003 R2 Administration Tools Pack

Once installed you’ll need to register the DLLs for AdminPak to run properly; why Microsoft hasn’t written AdminPak for Windows Vista blows my mind but I digress. Here’s the play by play:

Start > All Programs > Accessories > Right-Click Command Prompt and select Run as Administrator.

Copy the list below and paste it into the command prompt windows:

regsvr32 /s adprop.dll
regsvr32 /s azroles.dll
regsvr32 /s azroleui.dll
regsvr32 /s ccfg95.dll
regsvr32 /s certadm.dll
regsvr32 /s certmmc.dll
regsvr32 /s certpdef.dll
regsvr32 /s certtmpl.dll
regsvr32 /s certxds.dll
regsvr32 /s cladmwiz.dll
regsvr32 /s clcfgsrv.dll
regsvr32 /s clnetrex.dll
regsvr32 /s cluadmex.dll
regsvr32 /s cluadmmc.dll
regsvr32 /s cmproxy.dll
regsvr32 /s cmroute.dll
regsvr32 /s cmutoa.dll
regsvr32 /s cnet16.dll
regsvr32 /s debugex.dll
regsvr32 /s dfscore.dll
regsvr32 /s dfsgui.dll
regsvr32 /s dhcpsnap.dll
regsvr32 /s dnsmgr.dll
regsvr32 /s domadmin.dll
regsvr32 /s dsadmin.dll
regsvr32 /s dsuiwiz.dll
regsvr32 /s imadmui.dll
regsvr32 /s lrwizdll.dll
regsvr32 /s mprsnap.dll
regsvr32 /s msclus.dll
regsvr32 /s mstsmhst.dll
regsvr32 /s mstsmmc.dll
regsvr32 /s nntpadm.dll
regsvr32 /s nntpapi.dll
regsvr32 /s nntpsnap.dll
regsvr32 /s ntdsbsrv.dll
regsvr32 /s ntfrsapi.dll
regsvr32 /s rasuser.dll
regsvr32 /s rigpsnap.dll
regsvr32 /s rsadmin.dll
regsvr32 /s rscommon.dll
regsvr32 /s rsconn.dll
regsvr32 /s rsengps.dll
regsvr32 /s rsjob.dll
regsvr32 /s rsservps.dll
regsvr32 /s rsshell.dll
regsvr32 /s rssubps.dll
regsvr32 /s rtrfiltr.dll
regsvr32 /s schmmgmt.dll
regsvr32 /s tapisnap.dll
regsvr32 /s tsuserex.dll
regsvr32 /s uddi.mmc.dll
regsvr32 /s vsstskex.dll
regsvr32 /s w95inf16.dll
regsvr32 /s w95inf32.dll
regsvr32 /s winsevnt.dll
regsvr32 /s winsmon.dll
regsvr32 /s winsrpc.dll
regsvr32 /s winssnap.dll
regsvr32 /s ws03res.dll

Thats it! Just exit command prompt and AdminPak should now be fully operational within Windows Vista.