[Zope] cant see ZmySQLDA-2.0.0

Hi, I upgraded from ZMySQL-1.1.3-nonbin.tar.gz (worked) to ZMySQLDA-2.0.0a1.tar.gz with MySQLdb-0.2.1.tar.gz. There is no ZMySQLDA.patch any more, right? But after I installed MySQLdb-0.2.1, expanded ZMySQLDA-2.0.0 and restartet Zope all my Database-Connection are broken and in the Available Objects I dont even see a ZMySQL DataBase connection ... What's wrong - did I forget something ??? Thanks Mario