Report for parts by operation

We are looking for a report that would allow us to find all the parts that
have a particular operation performed upon them.
If there is a report pre-built for this that would be great, but if not,
could you give a relative novice advice on how to set one up.
Thanks in advance for any assistance.

Aaron Hoyt
System Administrator
Design Standards Corp.
PO Box 1620
Charlestown, NH 03603
Tel 603-826-7744