Hi Steve,
We have partnered with JWA and integrated Smith Cart with Connex for Dynamics (SAAS) : 
http://www.jmawebtechstore.com/connex...
Here are the details on the solution:
    - Customer hosts own MS Dynamics
 
    - Need to install a web service on your DNN site
 
    - Connex is a hosted SAAS solution with a monthly cost
 
Connex for Dynamics is developed, licensed and supported by JWA.  SmithCart is developed, licensed and supported by Smith Consulting.
All the documentation is provided by JWA 
http://www.jmawebtechstore.com/connex...
Let us know if you have any other questions.
Thanks!