That was for Vista glass frame with WPF. I thought that if it would not have been dependent on Vista (and WPF), you could have tried to convert C# code to VB.NET. Either with .NET code converter or manually.
You could probably make a "Vista glass frame form" by yourself. At least Form control has Opacity property. I needed once themes and skins for forms and used Adding custom skins for Forms in VB.Net as a starting point. It does use Panel control which may not support opacity, but if you find a suitable control for custom form's caption bar, you could make a similar form to what you have in Vista.