Ok some people in DS (AHEM DC) don't know how to take a screenshot. Here I will explain: Step 1 Find the key on your keyboard marked "Print Screen" or "Prt Sc" and press it when you have the screen lined up where you want to take the pic.
Step 2 Minimize or log out of DS, and at the desktop press the Start button
Step 3 Navigate on your pc to the MS Paint program (usually Start> All Programs> Accessories> Paint)
Step 4 Open the program and on the new page press shortcut keys Control+V (or go to the menu at top and select edit>paste)
Step 5 Use the shortcut keys Control+S (or go to the menu and select File>Save) to save your newly created screenshot!
Seriously, it's that easy! Once you take the time to learn it, you'll be taking screenshots in DS all the time! I hope you have fun taking the screenies, and be sure to post them here for all to see.
Happy Snapping,
Silm