There is couple of new Visual Studio 2008 Virtual Labs available @ Microsoft Visual Studio 2008 Virtual Labs
MSDN Virtual Lab: Visual Studio 2008 - Developing an Outlook Add-In
MSDN Virtual Lab: Visual Studio 2008 - Integrating Windows Communication Foundation and Windows Workflow Foundation
MSDN Virtual Lab: Visual Studio 2008 - Developing a WPF Application
MSDN Virtual Lab: Visual Studio 2008 - Developing a .Net Compact Framework 3.5 Application
MSDN Virtual Lab: Visual Studio 2008 - Lighting up MFC Application
MSDN Virtual Lab: Using LINQ to SQL with the .Net Framework 3.5 and Visual Studio 2008
MSDN Virtual Lab: Visual Basic 9 and LINQ
MSDN Virtual Lab: Building AJAX/JSON Services using WCF
MSDN Virtual Lab: Syndication using Windows Communications Foundation
MSDN Virtual Lab: Silverlight Monster Factory- Using a XAML Template