Since Microsoft hasn’t released an MSDN Library that includes .NET 3.0 and Vista documentation, it’s frustrating because you can’t get F1 help on all the new and shiny bits. If you’ve installed the Vista Platform SDK, you can open MSDN Library and past the following link into the URL field: ms-help://MS.VSCC.v80/dv_vscccommon/local/CollectionManager.htm. From there you can see the additional help collections you have installed on the machine. Check the items you want and you’ll have all the F1 help goodness that will make targeting the new Framework and operating system much easier.