I´m using BIAB 2008 on a Mac with Windows XP and Parallels virtualisation software. Works a dream. Admittedly it´s the only application I still need Windows for, but the improvements that have gone into BIAB on Windows over BIAB 12 makes it worth it.

humbug; I do exactly what you want: generate midi files in BIAB 2008 that I import into GarageBand or Logic Pro for further development.

brgds,
...tt