Hi there, from my previous research, i have an ols setup file on my system,
here is an image with info from the digital signiture including when the file was digitialy signed, this will be a few days before it was actually released "into the wild"
http://img267.imageshack.us/img267/8905/setupolddigisigzk0.jpg
and here is an image of the filename itsels, note its not a setupxxxxx.exe file
http://img508.imageshack.us/img508/3015/setupoldbz2.jpg