Well, that's the beauty of .NET. Ultimately, it doesn't care what language you use. And you can use VB or C# for module development. There have been times in the past when the Core had some C# components in it, when a particular team member needed to put something out quickly.

Some of us have learned the hard way, too-- NEVER be tempted to modify the core code! That is, unless you are submitting it to the Core Team for consideration. And then NEVER commit production sites to it until the Core Team has integrated it into the core. Back when I was working on the skinning solution, there were a few who had committed production sites to the "XML Skins" approach. Then got bit hard in the butt when that wasn't what was finally implemented.

So I NEVER touch the core code unless there's a definite bug, and I've submitted it to the present Core Team for inclusion.

Again, glad I could help.