Yes.
Arcade = no hardrive Pro = 60 gb hardrive Elite = 120 gb hardrive
GB means giga byte or how much memory an xbox hardrive has
No
The 160 GB and 320 GB PlayStation 3 consoles weight approximately 3.2Kg or 7.055 lbs. The name is Playstation 3 and it is not separated into the two words Play and Station, but registered as "PlayStation®3"
You Can't
While the 250 GB PlayStation 3 slim can play PS1 games it can not play PS2 games and their is nothing you can purchase to make it play them.
Yes. All the PlayStation 3 consoles have built-in wifi.
yes you definitely can just pop it in
This depends on the model of your PlayStation three. Sony has issued out four different models of the PlayStation three, these are; The forty gigabyte, sixty gigabyte, eighty gigabyte and the one hundred and sixty gigabyte. The forty and eighty gigabyte were released first, but the forty gigabyte PlayStation three cannot play PlayStation two games. Any other model can.
20 GB hardrive.
No.
I do not get your question