@Codesmith
Theres no need for that. Besides its not all in one directory, you would need to do something like:
for i in $(find . -name "*.h")
do
sed -e "s/struct[ \t]/struct ABOX_/g" -e "s/[Cc]opyright [0-9]*-[0-9]* Commodore-Amiga/Copyright 1993-2003 Genesi/g" $i
done