The -span option has ghost automatically load the next image. That should be what you need. One problem I have encountered is that if the ghost image names are over 8 characters long (including the numbers) ghost will not automatically load the next span. I use the following format for my image names and haven't had a problem since:
Image.gho
Image001.ghs
Image002.ghs
And for your reference a sample line that loads a ghost image file onto a partition from a network server:
X:\Ghost32.exe -clone,mode=prestore,src="I:\Images\Lab\4.9.09\Image.gho":1,dst=1:1 -sure -span
Do I use it in conjunction with -AUTO? Could I rename the spanned files or what that jeopardize the integrity of the file? Currently the filename is about 12 characters long.