This is the Microsoft Mobile update to address DST related issues in 2007.

Windows Mobile Updates for Daylight Saving Time (PocketPC)
http://www.microsoft.com/downloads/info.aspx?na=22&p=70&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3d1a74d009-4e90-438d-883d-638e0bfd993a%26DisplayLang%3den

Windows Mobile Updates for Daylight Saving Time (Desktop Tool)
http://www.microsoft.com/downloads/info.aspx?na=22&p=71&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3dc1b38b19-20cc-4b4a-90c7-8cb318fded57%26DisplayLang%3den

Windows Mobile Updates for Daylight Saving Time (Smartphone)
http://www.microsoft.com/downloads/info.aspx?na=22&p=72&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3d7074664e-827c-477c-a59f-a6103aaba3b1%26DisplayLang%3den