Using "Netbook bootmaker" installs "Netbook Installer" on a OSX Installer USB Partition, and enables it in the Utilities Menu.
Since "Netbook Installer ***231" doesn't have a corresponding "Netbook Bootmaker",
you could simply copy the NBI ***231 to the USB partition and overwrite the the one installed by "Netbook Bootmaker" (located in the hidden "Applications" folder)
No Need to move other Utilities.
or…. are you guys talking about adding an additional "netbook Installer" to the USB partition so that you have the option of using either one ?