Report to Compare invt value from 2 dates?

I have been asked to find or create a report comparing month-end
values of inventory between January 08 and September 08.

Vantage 8.03.405A, Progress

What is the best way to attack this?

Is there a stock report (yea, right)
Can I somehow create a BAQ to compare inventory qty and value on
different dates?
Export a file from my Jan 08 backup and from Sep 08 backup?
Other ideas?

Denton Yoder
Bil-Jax, Inc.