Can somebody please tell me what is blocking all (XP) workstations from being shown in my Vista Networkmap. All XP workstations have the LLTD hotfix installed (WindowsXP-KB922120-v5-x86-ENU). I put a newly installed XP workstation in my network, install the hotfix, and there you go... it is listed. I don't have to change anything else. It seems that as soon as a workstation has joined a domain ... it;s not possible anymore.

The following Microsoft research article might help you but be carefull as it involves registry changes to XP. I have not tried this but it might correct your problem. http://research.microsoft.com/~rjblack/Topology/