Looking for help with find and replace. I have a large document of 400+ chapters. A sample might be:

Chapter 99^p^t
text^p^t
more text^p^t
Chapter 100^p^t
text^p^t
more text^p^t

I want to change it to have an extra blank line after each "Chapter xxx"

Chapter 99^p^p^t
text^p^t
more text^p^t
Chapter 100^p^p^t
text^p^t
more text^p^t


With over 400 chapters its not exactly practical to add the extra returns manually.
Also is there a good on-line source for learning the ins and outs of find and replace?
Thanks, BZee