Well, booting into Window CD will not wipe your files.
Basically, after booting into your Window CD. It will let choose whether to use recovery console, repair/reformat window.
Here is a website to guide you how to change the boot device. Change Boot Device Order
They also provide different BIOS Screenshot example such as AmiBios, Award Bios and for Dell Systems. Look out for yours. If there is not, basically, it should be about the same for the others BIOS.
After you have set your first boot device to CDROM, restart and you should see this message "Press any Key when you see the prompt to 'Press Any Key""
Just press any key to continue.
After it loads finish, you should go to a blue page. press ENTER to start the Windows Setup program.
At the screen which lists the machine current Windows installations, select the problem Windows XP installation from the list and press R to begin the repair process. With any luck, this will refresh your system files and have them back working normally.
PS: Please be careful if you attempt to repair, because you might end up reformatting the drive. Which as a result, cause you to lose all your data. Please read the instruction given at the screen carefully!
Edited by Nikas, 18 May 2007 - 01:36 PM.