Jailbreak an iPhone- Help please

I have an iphone with the 4.2.1 ios and would like some help jailbreaking the phone. Any suggestions on the best way to do this? If I have to watch one more youtube video with some stupid kid, who acts like he's cracked the Divinci code or something, explain to me in his shakey video how to do it, I may erupt and just throw this thing in the garbage and go back to my droid :1zhelp:

LOL.. what service you running? Sprint?

At&t

Why you wanting to jailbreak it? We could probably fix it..figure it out.. but I have sprint and honestly have no idea.

There are some apps that you can't have unless you jailbreak the phone. Like making your phone a mobile wi-fi hot spot for a laptop while traveling and a few others I want.

I have that on my EVO. Maybe we can get it done soon. I should be able to figure it out.

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