and follow the tortuous path to the network download - which is quite a large file; the on-line installaton is path is a small file etc. - as you are merely installing an installation util and then grabbing them all of M$-land...
The network version is download to/for a CD use... etc.
If you google using:
XP sp3 download full
you'll get the above M$ hit; and more than a few others to similar full downloads (and CD sources too).