You need to enter the Bios. To do this you have to
restart your system and when it starts to boot up keep
pushing f8 until you enter Bios then go to boot section
and make your cd drive the first bootable drive. save
changes then exit the bios. you can then boot from your
cd drive. When you are all done doing what you need to do
you should enter your bios again and change it back to
the way it was unless you are going to start your system
from the cd boot all the time.>
Good advice, but wrong advice. F8 may work for you, but none of the
several computers I use on a daily basis use the F8 key for BIOS
access. One uses ESC, one uses Del, another uses F10,
another.....well, you get the idea.
Remember, don't assume that what works on your computer is the
absolute example of what will work (or won't) on somebody elses' box.
Every BIOS manufacturer, and computer, is different.
Personally, I think you are confusing how to enter BIOS with how to
choose between booting between regular and safe modes in Windows.
BIOS and WinXP boots are two totally different things.