DS Lite warranty

I just bought a used DS lite, and I was just wondering how I can find out if the warranty on it is still active

http://www.nintendo.com/consumer/manuals/warrantytext_eng.jspThe DS has a hardware warranty of 12 months from the date of purchase. You'll need to have proof of when it was originally purchased, hopefully the person you bought it from still has a receipt.But the warranty says "Original Purchaser" so you may not qualify for it since you bought it second hand.

sign up at club nintendo.com and register your ds and make your warranty longer

^ if its not already been registered by the original purchaser.

I don't know who the original owner is... bought it from a second-hand shop

I say the original warranty has expired, but you can try to register it at nintendo.com and see what happens. Did this second hand shop offer a warranty?