if ($ENV{'HTTP_USER_AGENT'}=~/^googlebot\/2\.1|slurp|some_other_bot_name$/){

#put any other routines you want to run on the request -> like logs, etc here or just...

print "Location: "http:\/\/www\.example\.org\/$ENV{'PATH_INFO'}";
}

# And if not in your bot-list, do what you originally planned...

else{
your original script's body here
}