This is a stupid ? that im asking

[3sc0b4r]

Backing up games on the Xbox HD only requires a PC for the first time you install the software on the Xbox.

Later when you have a program like HDDLoader installed (requires a modchip), you simply put the game you'd like to have on your Xbox HD into your Xbox and let that program copy the game (just requires 2 button clicks), this is normally done within 5-8 minutes for bigger games. Since there are many games that are about 4 - 5 GB its recommended to install ab bigger HD than the standard.

so you just need to:

>get a modchip and install it

>get Slayer's Autoinstalller (will automatically install all of the important programs such as, evo-x, xbmp, HDDLoader...), this program is also very comfortable when you want to set up a new HD