There is a lot capture screen software that prints screen and grabs screen shot from Windows desktop. Why you must purchase while you already have it.

These steps show you how to capture a screen shot of your desktop

1. Press the Print Screen key on your keyboard. It may be labeled [PrtScn].
2. Open an image editing program, such as Microsoft Paint.
   Start > Program > Accessories > Paint
3. Hold Ctrl and press V
4. Go to the File Menu and choose Save As.
5. Navigate to the folder where you want to save the image.
6. Type a file name for the image.
7. Select a file type.
8. Click the Save button.

Thats all.

Actually, I have been tagged by waliz.. haha.. now, for the first time I want tag other, I choose bayan. Come on Cik bayan show us your desktop..