One thing missing after my move to Windows 7 was a decent PDF preview in Outlook. The default Office 2007 install gave an error referring to the Windows Vista PDF Preview Handler. The solution was Tim Heuer’s PDF Preview Handler for the excellent Foxit Reader. Thanks Tim & Foxit!
Foxit PDF Preview Handler - timheuer.com
The Foxit PDF Preview Handler is a piece of software written by myself with sponsorship from Foxit Software (providing the license so that we all can enjoy).