Just like it says in the user's guide -- Press the Power button, while holding it down, Hit the Home down at the bottom. Your captured screenshot is now in the camera gallery.
I just purchased the One V (GSM international unlocked) and now looking for a prepaid gsm carrier....seems like Straight Talk is a choice for a lot of people, but reading a number of threads about data throttling or slow/no data for unsolved reasons.
GSM Arena lists frequency bands of this...