[MovedGoalPosts]

Put the Win XP Cd into the Cd Drive. When windows XP CD tries to start up, cancel it, and close it. Reboot the computer. You should at startup see a message, before the windows logos start to appear along the lines of "Boot from CD". Accept that. (If you don't get that message your PC needs to be reconfigured in the BOIS to allow boot from CD).

When the CD starts you'll get a black screen with blue and white text along the bottom loading drivers. Eventually you'll get messages as to where do you wnat to load windows. Select the new install option, not repair. I suggest you delete the existing windows partion (You'll be warned about loss of data and stuff do all that - the last command of that process will be to press L). Then set up a new partition, formatted as NTFS, allow it to do the full, not quick format (Go away and come back half hour later, depending on your HD size). Then the rest of the install should just be following the prompts, and putting the codes and stuff in.