Do you mean from your TV?
To get decent photos of your TV, then you just need to use a slow shutter speed (this prevents seeing the scan bands), unfortunately, this may be impossible with a point and shoot camera.
If you mean from your PC, then press shift and Print Screen, then open something like paint and Ctrl and V to paste it into the program. I use a program called Snagit, which does everything including resizing and adding captions though instead of the Print Screen command.
See attached desktop capture.