Seagate Tape drive

I just got my sbs51 server running and now would like to set up my Seagate
scsi tape drive for backups. I have it connected on an Adaptec 29160 scsi
adapter as device 6 but could not get it to work with sbcon. I have just
downloaded a trial version of backupexec by veritas but it doesn't seem to
see the drive.
When I do a list storage adapters from the console prompt, it shows:
0x00 [V025-A0] Novell ATA/IDE Host Adapter Module [slot 0]
0x01 [V025-A0-D0:1] ATAPI-CD ROM-DRIVE-56MAX 56GA
0x02 [V321-A1] Adaptec SCSI Card 29160 - Ultra160 SCSI [slot 2]
0x04 [V321-A1-D6:0] ARCHIVE Python 04106-XXX7550
0x03[V321-A1-D0:0] SEAGATE ST39205LW rev:0105

Well this is progress but I just need a little more help to finish.

Thanks, Roger