Microsoft® ActiveSync® 3.7 is the latest synchronization software for Microsoft Windows® Powered Pocket PCs and Smartphones.
ActivceSync 3.7 contains fixes making synchronization more trouble free than ever before and includes all the significant improvements brought to you in ActiveSync 3.5 and 3.6: it is easy to install and use while offering the best levels of reliability. If you had not already installed ActiveSync 3.5, ActiveSync 3.7 will also bring you up to date with compatibility to Microsoft Office XP and Windows XP.
Download: Download ActiveSync 3.7
News source: Microsoft Downloads