A Simple Class in VB.Net

Question

I am very new to VB .Net and I am grappeling with classes. Can anyone show me a simple example of a class that concatenates the first and last name and displays it on screen. I'm getting sysntax correct in the class, but using the class is where i'm having the most problem. Books i've looked at don't give overly simple examples. Thanks in advance to anyone who can assist me.