I'm running Vista 64 in a bootcamp partition on my MacBook Pro, accessing that partition through VMWare Fusion. I'm able to install Oracle 11 (after fixing the stupid loopback connector) and can connect to is fine. I also installed Oracle 10G later. I can't reverse engineer either database because Visio won't show me options for the appropriate ODBC driver, and when I am able to get it using a user or system DSN, Visio gives me an error that it can't see the Oracle client install or something to that effect. I googled one potential fix, but it required that I hack into my registry to get around the 64 bit ODBC client driver issues. Any help would be appreciated.