command (apple key)- shift - 3 takes a full screen shot
command - shift - 4 will give you a target icon where you click and drag out a box, when you release it snaps the box you just drew...
also, if you hit the command - shift - 4 and don't click and drag but just move the target curser over a select window, you can now hit the space bar and the whole window you are over will highlight, click the mouse and you have a perfect shot of that window
take a shot of all your book marks, I need to see what's going on
oh, and these are only macs...