Sorry, it is not simple. Just read this forum.
-> Why not return it and get what you really wanted?
Has anyone tried to reformat a Gateway MT6836J notebook/laptop that currently runs vista and I want to get rid of that and put XP pro on it.
I have tried all i know, and when i made it boot from the disk it said it could not find the hard drive.
I then tried again this time pushing F6 and seeing if my recovery disk that was created by the shop for me. However it does not work, the screen keeps saying that I need to insert the system recovery disk etc.
I am going mental, as the operating system is in Japanese and thought it would be rather simple for this to be done.
Any help is appreciated.
Cheers

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic