(adsbygoogle = window.adsbygoogle || []).push({}); And it is very specific. On the PS2 you can plug a separately bought Network Adaptor and in turn plug into the Adaptor an internal Hard Drive (without opening the PS2 case at all, even if the Hard Drive is supposed to be internal). Then you can also connect the Adaptor to your network (e.g. to a modem) through an external LAN cable, and transfer game images from your PC to the aforementioned HD (without unplugging it from the Network Adaptor and thus from the PS2).
So basically all you have to do is backup your games on your PC, and when you want to play them, you take your PS2 from your living room to your studio, plug it to your modem, and run a program from the computer to install the games. Then you happily get back to your living room and play those titles for at least a month without having to keep tinkering with stuff. Super easy.

Now, the question is, how does it work with the XBOX360 instead?! I'm a newbie when it comes to the XBOX360 so in your explanation please be as simple as I was in mine.

I thank you in advance for the help.

Thank you for helping me out, I appreciate this man.
Yes please if you could elaborate on that a bit more I'd be grateful, as I would really like to be able to set up the console properly for the kids so they don't break the discs once more.. They broke a PS2 disc once so I set it up that way, and now they want an Xbox360 but I'm not going to buy it to them if there's no way to store a bunch of games on the hard drive and load them without bustling about with the originals.
Thank you