Visual Basic 2008 help

I need help with something in VB 2008 Express Edition. Here is the gist of the problem:

I have a groupbox that contains a series of panels which are overlayed on top of one another. They are all transparent and they contain images which blend together to make one image. These "layers" can be changed via some controls elsewhere in the form. What I need help on is how I can save all of those as one image. I've tried looking for some code to take a screenshot of a certain area of the screen, but all the code is very complicated and I'm not sure where to put it. If anyone can help, please do.

Thanks!