SCSI CDROM 'juke box' setup

A while back, I acquired a 7-disk NEC MultiSpin 2Xc drive which uses a SCSI interface. With no particular difficulty, I installed the WD SCSI card and the drive, the CONFIG.SYS and AUTOEXEC.BAT patches and quickly had access to the drive. Well, I had access to the first disk in the drive. The existence of the remaining six were not acknowledged! The WD diagnostic program sees all seven, so I tend to doubt that it is a SCSI problem, but nothing that I have done relative to MSCDEX has had any useful effects either. For perspective, this testing is being done on a Pentium II 133MHz equipped motherboard with 16Mb memory running PCDOS 6.3. I have yet to try it with W98. Can anyone offer any hints, kinks, experience, or clues of any variety as to how to access the remaining 86% of this 'juke box'? Thanks! - don