converting farhrenheit to celsius

Question

I have a textbox1 for user input and a textbox2 for user output. I have to radio buttons for celsius and one for farhrenheit. I am trying to take what the user inputs and convert celsius to farhrenheit and visversa. I am a beginner. we just started vb this week and are books aren't in yet so we are having to research. If you can help I would deeply appreciate it . Thanks