Screen shot issues

[acred99]

Hi
I have been trying to get some screen shots but to no avail.
Also when you add a skin and play it through Mission Builder you can get the skin to appear and play a normal ie selecting to coding but when you record your mission its fine but later on replying the track the video edits the skin and puts the unit no onto of the skin you have selected to have no unit making on. I've keep pressing the print screen button and no screen image appears.
What am I doing wrong?
Matthew