How to jailbreak and unlock my iPhone 3G?

AT&T
Firmware 05.15.04
I'm looking to jailbreak and unlock it. But i don't know how. I need step by step instructions please!

Also, i'm giving it to someone that already has call/text plan with AT&T but no data plan. Can they still use this iphone without having to pay for data once its unlocked?

Jailbreakme.com worked for me

I wonder if you're the jasmine silva I know. Do you live in des moines with your dad? Lol. Go to YouTube and type in "icrackuridevice". He's got a bunch of videos that'll help. Just scroll through his channel and find one that fits the current iOS you have

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