>We have a HP3000 mini computer (Operating Program MPE version 7) which is
>being used to support our existing library system HP BOOK.
                                                   ^^^^^^^
Assuming that you are talking about BOOK from Stowe Computing in Adelaide,
CIT went through the conversion process earlier this year.  If none of the
very good advice previously posted helps, you could also consider using the
parameters in BOOK831 & BOOK832 to produce subsets of your total catalogue
which will fit into available disc space or onto a single tape.

Please feel free to contact me directly.

Sam Calvert
Systems & Applications                                      phone: (06) 20-74251
Canberra Institute of Technology               email: [log in to unmask]