Regarding the Sable Antelope... I found it. There was an earlier post (more than 90 days) where someone was looking for the Sable Antelope and it brought to my attention that I too did not have it. The only response was to check the downloads at Microsoft. I could not find it and when I "checked for updates" it said there was none. You need to go to this site "http://www.microsoft.com/games/zootycoon/zoo1/bonusdisc.asp" to get it. it mentions there was a problem with the second disk, and the Sable Antelope and Arctic scenario are missing if you purchased the disk at certain locations. Hope this is not a repeat or too late for others to enjoy.