Hi,
You might want to take a look at BRU. (
www.estinc.com) Although it's a commercial product,
they also have a "Personal edition" for non-commercial use, which comes at a reduced fee.
You can download a 30 days-trail from their website.
It's really very easy to set up Bru with an e-smith server: install the rpm, configure your tape
device (good examples and good manual from Bru!) and add a job to cron (well, to the template file for cron to be exact)
good luck.
Niels