NoteBook DualView Adapters

[u_rueth]

Hi! How can I find out which Notebook Display Adapter supports DualView mode, i.e. I need to display different things on the notebook lcd monitor and the external device (in WinXP: extend desktop). I want to buy a new notebook but only one with this feature.
- Does anybody know a place with a list of DualView notebook adapters?
- Does anybody have an idea how I can find out which adapter supports this feature?

Thanks and regards,
Ulrich