Reinstalling XP on Dell Latitude D610

I need to reinstall XP on a Dell Latitude laptop. The service tag is 5C5SP1J. I have a XP CD but it won't recognize the CD nor boot up. I tried the USB action but it won't format it! I need to reinstall because it had a illegal copy of XP on there. Also, my sister may be selling it.
The COA is Windows XP Professional SP0. I am on a tight budget so I can't get a Dell XP disc.