how do you do screen captures?

[Greesha]

i've done a couple by using my sister's digital camera to take pictures of the tv, but i'm getting this feeling there must be an easier way.

[petzke_42]

You need a video capture card for your comp.

[Greesha]

oh. well, then. it was a thought, anyway.

[Newbie]

u need to safe pics form the TV or PC ???