From ehow.com
[font=Arial,Helvetica,sans-serif][size=-1]1. [/size][/font] [font=Arial,Helvetica,sans-serif][size=-1] Find a thin-bladed piece of serrated metal. A broken coping saw blade is perfect, if you happen to have one. [/size][/font] [font=Arial,Helvetica,sans-serif] [/font] [font=Arial,Helvetica,sans-serif][size=-1]2. [/size][/font] [font=Arial,Helvetica,sans-serif][size=-1] Determine which way the key is oriented. You'll want to work from the side with the teeth, not the smooth side. [/size][/font] [font=Arial,Helvetica,sans-serif] [/font] [font=Arial,Helvetica,sans-serif][size=-1]3. [/size][/font] [font=Arial,Helvetica,sans-serif][size=-1] Slide the serrated blade into the keyhole so that the key and blade are tooth-to-tooth. [/size][/font] [font=Arial,Helvetica,sans-serif] [/font] [font=Arial,Helvetica,sans-serif][size=-1]4. [/size][/font] [font=Arial,Helvetica,sans-serif][size=-1] Push the blade in far enough for its teeth to grab the key's teeth. [/size][/font] [font=Arial,Helvetica,sans-serif] [/font] [font=Arial,Helvetica,sans-serif][size=-1]5. [/size][/font] [font=Arial,Helvetica,sans-serif][size=-1] Draw the blade out slowly and smoothly.[/size][/font]