Microsoft® System Center Mobile Device Manager 2008
This is just a shameless plug, but we worked as part of the feature development team for Mobile Device Manager 2008. My team was responsible for the SQL Server 2005 Reporting Services reports/service within this new product. If you are looking at managing lots of smart devices on the network, you should check out this new Microsoft Enterprise product. Below are some links to the announcements.
http://www.microsoft.com/windowsmobile/mobiledevicemanager/default.mspx
http://seattlepi.nwsource.com/business/336466_ctia23.html
http://www.sfgate.com/cgi-bin/article.cgi?file=/c/a/2007/10/24/BU5VSUI55.DTL&type=business