Advanced Search & Delete Text File

I have a file in which email messages are stored in. Every email is separated by by a ^Z character (Control-Z).

I need to extract all emails after the 65,00th one to another file and delete them from the original file.

Any suggests on accomplishing this?

Change all new-line characters to something else
tr "\n" "~"

Change all ctrl-Z to new-line
(I think ctrl-z is octal 32, so...)
tr "\32" "\n"

All the messages would now be one per line. Thus, you could use head and tail commands to break apart the file.
When done, reverse the previous two steps.

Make sense?

That worked great..I made a bash script out of it and it did the job!
Thanks A lot!

I really appreciate the suggestion!

-Max M.