If you are looking for PFR/OER on the Cisco Doc CD, there is one thing you need to know.
Cisco spell opimised as optimized!
I went to the Doc CD http://www.cisco.com/cisco/web/psa/configure.html
Then Products/Cisco IOS and NX-OS Software/Cisco IOS/Cisco IOS Software Release 12.4 Family/Cisco IOS Software Releases 12.4 T/Configuration Guides – Direct Link
Then under IP at the bottom you will find it.
I did a quick search for optimised and it showed nothing!
The reason is Cisco spell optimised as optimized.
Hope it helps someone.