Zip Drives

I've got a parallel port zip drive and am trying to get it working on my
Linux box. The kernel has internal support for scsi devices, however, when
I load the 'ppa' module I get several unresolved symbols on the
paraport_blahblah. If I'm supposed to load a paraport module first then I
don't have it on my system but I don't think that's the case.. Does anyone
have some insight?

Don