Best Screen Grabbing/ Audio Capturing Solution

So I my lecturer wants a way to record all of his lectures. He has a Samsung Slate Series 7 PC. He wants to be able to screen grab the screen as well as the notes he makes with the Wacom pen, he also want to record his voice so that he can create a video with audio that he then can upload to our website so that students can download it to watch again.

I want to know, what will the best software be that will deliver the best results as well as a good USB microphone to capture good voice quality.