The Vista driver will
work with this - however, it doesn't install easily! Run the installer, and when it freezes towards the end of the process, kill it through Taskmanager. after a couple of goes Windows 7 will then offer to reinstall using the proper settings. Allow this and the driver will install.
However, I can't get the printer to work when it's shared out. It's fine as local only printer, though. Hopefully Windows 7 final version will include a driver for this printer!