It appear that John and Jeff have been working together and have posted another powertoy to take the currently selected page(s) and make then a subpage(s). You can read about it here: Yet another OneNote Powertoy. I also had a post about this: Make current page a subpage. Check it out!
PingBack from http://www.kolzow.com/blog/2007/08/23/make-subpage-powertoy/
Do you have a version that works in ON2003?
Nope sorry this only works on OneNote 2007
Do you have the .zip file and? The link above is broken.