help cant install windows on my mac laptop

hi i have a mac laptop but dnt have anyt operating system on it but only have windows xp cd and i can not install windows xp on this it crashes when its about to start setup ive heard that macs need summat doint to them to make them take xp can any1 help please ? ? thanks lei add me on popmycherryandyourlbegolden@hotmail.com if u have msn messneger