BoM routings in report

I'm tring to make a custom report in either Crystal or Report Builder
to pull in the routing information that is included in the BoM in part
file maintenance.

I have modified a RB report from the files section here, and it pulls
all the components in for a particular BoM. I just need to know which
tables to link in so that I can access the routing info.

Alternatively, if someone already has a report that does this, then
would they mind sending me a copy?

We run Vantage 4.0, Progress 9.0B with ODBC connectivity , Report
Builder and Crystal Reports Ver 7.