Posted 25 October 2012 - 01:20 AM
It was not clear from your post exactly what you needed help with. Whether you have a problem making the capture or editing it.
If you google "screenshots in sim 3" (no quotes) there are plenty of possible solutions. I don't play the game so I can't advise directly. Some general rules:
Printscreen (Prt Scr) copies the screen to the clipboard. You can then paste into a graphic editor and crop or otherwise edit it.
Better is to use a screen capture utility. Most allow you to specify a folder to capture into and you may have a choice of what parts of the screen are captured
Game Capture Programs
Progs like FRAPS or Bandicam can record the game and provide still captures.
If you try capturing the screen and you get a black rectangle where the picture should be, the game is set to use what is called an overlay. The PC processor is only providing that rectangle and the graphic card fills it in with the video. Since the screen capture is within the PC processor, it does not see the video. You cannot capture the picture on that PC unless the application comes with its own utility for doing that.
As an example, in Windows Media Player you can set the video to use an overlay or not. Overlays reduce the processor load on the computer but you cannot capture the video scene that is playing. If you don't use the overlay setting, then you can capture the video scene.