MSDE 2000 installed on SQL 2005 Server

I have a vendor suggesting that we install MSDE 2000 on our SQL 2005 server. They don't support SQL2005 yet and believe that this would be a supported installation of Microsoft products. Would this really be supported?We do support MSDE2000 and SQL Server 2005 side by side on the same box.|||Thank you very much. I feel comfortable proceeding with this enviroment now.sql