how to implement ws-at transactions in appfabric applications

Question

in the following forum post, a microsoft person indicated that there is no ws-at transaction support exposed in AppFabric but that something abut WS-AT transactions can become involved with an AppFabric call by using the WCF transactionScope options:

http://social.msdn.microsoft.com/Forums/en-US/dublin/thread/1a34bff2-1ce3-4e28-8c3b-96cec68a86e3

Does anyone know how, using the classes found in the Microsoft.Application.Caching.Client library, it would be possible to enlist a call to the Cache (i.e. cache.Put(key, object)) within a System.Transactions (.net 2.0 transactionscope) block?

Thanks,

Stato