This is the official approach to convert Sitefinity C# project to Visual Basic project.
If you want to Sitefinity in Visual Basic give this approach a try and if you encounter any problems I will be glad to assist you.
All the best,
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items