CVS : create a module from an already existing module

[Thomas Lavergne]

Hi all,
I have a sub-directory  (called sub1) in my current development module 
(dev1). I would like now to create a new module (dev2) but which uses 
the source codes in sub1. Thus, I would like to use an "ampersand" 
module as for sub1 and have it checkout'd/commited by both dev1 and dev2 
as needed.
Could you please explain me what should I do to:
1) create a new module (called sub1) in my repository,  this module 
should contain the source files which are now in the directory sub1 
(keeping their history)
2) "remove" the directory sub1 from the dev1 module
3) "add" the dependency between dev1 and  the new sub1 and also between 
dev2 and the new sub1
Thank you very much,
Thomas