MS Dynamics - CRM 4.0 is one of the recognized products for mid-size, large customers for customers' relationship management products in the market.
If you have a CRM 4.0 in your company, you might want to integrate CRM Data with other business applications. The way to do this is to use MS Biztalk server which comes now with a CRM 4.0 Adapter.
This means that you can make use of CRM schema and Data using Biztalk 2006/2009 in your business applications or other products using this new released CRM adapter in Biztalk.
To download and start integrating with CRM 4.0, this is the download link and some useful documents to wotk with Biztalk CRM Adapter.
Hope this helps.