Thanks Phantast. I have 3.1 and have been looking for tuts on the subject. I have been told that the terrains can be saved out of Bryce in other than obp but I have not been able to do it yet (might not be able to in 3.1) If you can not save terrains in other formats than obp in B3.1 - how our other people doing it - do they send them somewhere and have them done or is this something the newer versions can do and people are re-saving the obp of other peoples as other formats for them?