i just use a stand-alone cd burner for my mixdown from my vf-16.
i connect it with a digital cable. i got the cd burner from circut city
for about $200.00 it does the job good!!!
I just purchased an Onkyo se-u55 ($99, www.JandR.com) sound module for my computer which allows me to hook the vf-08's sp-dif output (or input) to my computer for true digital mastering.
I haven't done much with it yet, but initial trys show it works very well. Much cheaper than going to the SCSI card (unless you already have one)