Calling C++ dll class from Visual Basic

So me and my friends have this project where I have a C++ class that needs to be called from Visual Basic. I've seen a few things about this but not much has helped. Does anybody know how to do this? I have a lot of experience in C++ but none in Visual Basic. My friends are the VB experts.

I am using visual studio but I also have gcc/g++ if that will be needed.