vim map question

Página Principal
Anexos:
Mensagem como email
+ (text/plain)
Apagar esta mensagem
Responder a esta mensagem
Autor: Mike Starke
Data:  
Assunto: vim map question
I would like to map the <F5> key in vim to insert
the prsent working directory `pwd`

How would I construct that line in my .vimrc?

Does anyone have a good web site that deals with
the .vimrc file and some easy to follow examples, etc.?

-Mike