You may have noticed that within tool windows like Solution Explorer, you cannot reach the toolbar by hitting tab or arrowing to it. The keyboard shortcut to reach a Tool Window's toolbar is Shift+Alt. Note that Alt+Shift will not work.
Reposted from Did you know... How to access a toolbar within a tool window? - #007 by Sara Ford, author of Microsoft Visual Studio Tips
Microsoft TechDays Canada is a technology training conference for IT professionals and developers. With forty, 200+ level sessions, it brings you the rich learning experience of Microsoft Tech·Ed (without the travel) on both current technologies and new products like Windows 7, Exchange 2010 and much more. Register today by visiting http://www.techdays.ca/.