You can download the full 12.5.1 build 2269 install that has the Ghostoem32.exe by going to fileconnect.symantec.com and entering your GSS serial # and you can download the full 12.5.1.2266 with the ghost oem files.
or you can follow this link
http://service1.symantec.com/SUPPORT/on-technology.nsf/docid/2009052211051260
or request this from support or on the other threads here on the forum.
http://service1.symantec.com/SUPPORT/on-technology.nsf/docid/2010040917035960
cheers.