You'll find Michael Greenstein's bonsai database software on the GSBF site at the
following link.
I've never used it, but it is freeware. You would need a copy of Microsoft Access 97 or 2000 to be able to make use of it.
An Australian bonsai store has posted a couple of messages concerning their database software. You might follow that link down in Bonsai on the Internet... might be less expensive than buying MS Access.
Regards,
Matt