QUOTE (Mr E @ Apr 19 2009, 03:25 PM)

Step 1: Read sticky already posted.
Step 2: Press Control+Print Screen, or on some computers, just press Print Screen.
Step 3: Paste (Control+V) into Paint or any other picture editing program.
Step 4: Use mouse to crop out unnecessary parts of the screenshot.
Step 5: Click and drag the corner of the canvas the screenshot is on until you can't see any more empty area. Save as .PNG for best results, and never, NEVER save as .JPEG or .JPG. (Horrid quality.)
Shouldve just posted a link to the guide.
And .JPEG and .JPG work well in some cases its really on runescape pictures that are best to use in .PNG because of file size and other picture quality benefits....