(imported topic written by MBARTOSH)
How can I create a group that has only computers Windows workstation type operating system? I want to exclude all servers and the key is I want to also exclude some workstations.
(imported comment written by SystemAdmin)
Based on limited information 
Set the group to use “Include computers with all of the following properties”
Then add:
OS contains Win <- includes all Windows systems
OS does not contain Win200 <- filters out Win2000, Win2003, Win2008
Now if you need to exclude random workstations
Computer Name does not contain
If there is something else you can exclude the workstations by, say by subnet, you could do that also. The other possibility is using the “Relevance Expression” to build some type of question to include or exclude by other properties, say for example, systems that have a certain file or folder.
Hope that gets you going.
Martin Carnegie
Gulf Breeze Software Partners