Since this laptop is bundled with Linux, you need to have all the drivers in place before you can install XP on this E725 Laptop.
Acer has the drivers as part of the E720 release and you could get all of them on the below ftp site of acer itself
Incase you want to do Vista on the Acer eMachine E725 instead , go to this location
Hope that helps, do leave a comment !!