How to reset iphone 4s passcode?

I know i asked a question similar to this earlier, but i didn't get any answers that i wanted so i'm posting a better worded one.
i forgot my passcode and i really want to reset it. I tried plugging it into itunes and it tells me i need to enter my iphone's passcode before they could restore it. Can anyone please explain to me how to reset it?

I'm pretty sure if you forgot it, you have to brin it to either the place you bought it, or a retailer that sells iphones! I'm sure they will do it for you!

Look it up on YouTube Srry that's all I know

Contact apple go to their website and call them

1. Open iTunes
2. Turn off your iPhone
3. Plug your iPhone into your computer
4.
-Once your plug it into your computer, the iPhone will start to turn on (you'll see the Apple logo).
-While it's turning on, hold down the Power button (top) and Home button (bottom) at the same time until you see the iPhone screen turn off.
-Once the screen turns off, let go of the Power button BUT make sure you keep the Home button pressed until iTunes shows that your iPhone will need to be restored.
5. That's it
**WARNING: all of your iPhone content will be erased (contacts, pictures, music, etc)**

Call your phone company with a diffrent phone or bring it in.