I think a Jaz drive acts just like a harddrive (just like any other removable drive, like a Bernouilli or the Syquest EZ). Make sure the SCSI chain is terminated on both ends, and that your Jaz drive has a unique SCSI ID.
The only thing you should do now is to prepare the drive in HDToolBox, and you can use it like any other harddrive.
It's been a long time since I used removables so if anyone can correct me on the above....