We support the following versions of Microsoft Dynamics NAV with Microsoft Windows Server 2008 R2 and Microsoft Windows 7: Microsoft Dynamics NAV 2009 SP1. Please note though that tests are currently taking place on the compatibility of Microsoft Dynamics NAV 5.0 SP1 with Microsoft Windows 7 and Microsoft Windows Server 2008 R2. Furthermore, the compatibility for Microsoft Windows Server 2008 R2 does not cover Business Notification for Microsoft Dynamics NAV and Commerce Gateway.
For more information about requirements, please go to http://msdn.microsoft.com/en-us/library/dd301054.aspx.
The MS's compatibility page for Windows 7 says that NAV 5.1 is compatible, that seems to be contradiction!
Check this page:
Microsoft Dynamics NAV 5.0 SP1 is compatible with Windows 7 and Window Server 2008 R2 with Update 2 for Microsoft Dynamics NAV 5.0 SP1.
You can find more information about Update 2 for Microsoft Dynamics NAV 5.0 SP1 here:
This blog: http://blogs.msdn.com/nav/archive/2010/03/02/platform-update-2-for-microsoft-dynamics-nav-5-0-sp1.aspx
is it also compatible with outlook 2003?