Visual Studio "Orcas" makes it very easy for your existing VBA solutions to call Visual Studio Tools for Office (VSTO) methods!
By setting the "EnableVbaCallers" and "ReferenceAssemblyFromVbaProject" project properties to TRUE, VSTO automatically adds the necessary code spit and references to your VBA project.
Then you're free to mix managed .NET code with VBA script! Preserve your investment in VBA and amaze your friends as you effortlessly call VSTO using VBA's IntelliSense.
Join Eric Schnepp, Principal Program Manager in the VSTO team in this screencast to see how it all works.
Length: 8:08