Itunes games problem

So i downloaded some games for the ipod andto put those games on it i need to turn "enable disk use" on, so i turned it on but when i restart itunes it's off again, ireinstalled,restored and reboot my ipod but it still stays off, i've got an ipod 30gb video and i use it on windows xp. Does somebody know how to stay"enable disk use" on if you restart itunes, it always jumps off Plz post.