There are a few tools floating around the internet that can do that, there's fraps, I think that's at
www.fraps.com , there's snagit, which has a free trial, that's at
www.techsmith.com which is the one I use. You could probably find some others at
www.download.com . One last thing, it would help if instead of the topic name being Dolphin, it was named How to take screenshots?. You see, if there is a couple of people asking for help at this forum, if they're all named Dolphin help, and one named, for example, keyboard not recognising, that topic will stick out, and people would probably go to that one first.