and set the boot order so the CD is the FIRST boot device. If you don't the laptop will just go ahead and boot from the hard drive which is likely what is currently set as the first boot device.

Your laptop's manual should tell you how to do this (as could some of us here if you had seen fit to inform us of its make and model).

Norton's Disk Doctor has been known to CREATE problems on XP systems. A better choice is to use the native CHKDSK.EXE.

You might look over:

Also this explains scheduling on reboot:
What Symantec has to say about exclusive access

My personal recommendation is to avoid NDD and the rest of what is on your Norton System Works 2003 EXCEPT for Ghost 2003 which you might consider installing.