WDS – multiple images

Hello,

I’ve now got the WDS working, nearly properly. If i specify which image to use in the wdsunattend everything goes seemlessly. This would be fantastic if i only had 1 image group.
I have 2 image groups, 7900 for desktops, and 6730 for laptops.
There should be a way for WDS to detect which image to use so i don’t need to specify it in the answer file, but i don’t know how to set this bit up.
Has anyone been able to implement this process successfully?