Microsoft CRM 3.0 Update for Vista and Office 2007
The new CRM 3.0 Client for Vista and Office 2007 is ready for download, DownloadLink
I have installed the new client, and here you can read my opinion, first of all, the official changes from Microsoft:
Support for Vista and Office 2007
Microsoft SQL Server 2005 Express Edition instead the 2000 SQL Version.
Better Performance
Includes the newest Update Rollup 1

