Massively Updating to Mac OS X?

Zerocool3001 asks: "I work for a school in California that uses all Macintoshes. All of the machines have Mac OS 9 on them. We would like to upgrade to Ma OS X 10.2 and we have a net install server with disk images ready to install. However, it appears as though net installations of disk images is not possible in Mac OS 9. If you have any way to install a disk image over a large network to about 500-700 computers, we could definitely use the suggestions."