Create a collection for build and capture TS only

Hi,

I'm pretty familiar with SCCM 2012 OSD but I think I still miss some basic thing to solve this

I have a reference virtual machine (VMWare) for Build and capture purposes.

what I want is this machine only to have the deployment for Build and Capture task sequence I configured

so I tried to create a new collection and add a query membership of the VMWare's MAC address - unfortunately I get "No task sequences are assigned"

I tried to use Add Computer and added a new resource with the computer's MAC address to this collection - still! can't get the task sequence

so the only thing that worked so far was to deploy this TS for all unknown computers, which works immediately and then disable the TS.

any ideas what's the best way to make this happen as expected?  thanks! 

Tamir Levy