yeah, i was hoping there was a way to do it without having to register, since it DID say when publishing it would be publicly available, but alas.
if people are really interested, i can try and research another way.
jon
EDIT: there are high hopes that a publish without logging in feature will be coming soon. apparently you can do it for text documents (ex-writely), but not for spreadsheets, so i'll assume it's coming soon.