Just blogging about POS yesterday I ran into this article today! It can be found in the MSDN solution architecture dev center and shows how technologies accompanying VISTA are able to improve user experience tremendously.
The good things are that this technology will not be bound exclusively to VISTA but will also be available e.g. for XP embeded and WEPOS.
Therefore it is certainly worth while to have a closer look at the new Windows Presentation Foundation (WPF), WCF and WWF because good looking presentations will help You sell more products, or?