cvs and ssh

[Serbulent UNSAL]

Hello


I am trying to install cvs with ssh. Here is what have i done. 
I am using debian sarge and cvs has alredy been installed. 
I create a directory as /var/cvsroot 
I create a cvs group and user with; 

# groupadd cvs 
# useradd -g cvs -m -d /var/cvsroot -s /bin/bash -c "CVS" cvs 

commands. And then 

# cvs -d /var/cvsroot init 
# chown -R cvs.cvs /var/cvsroot 

#export CVS_RSH=ssh 

Here is the error message 

usta:/home/usta# cvs -d :ext:address@hidden:/var/cvsroot checkout
module 
Password: 

after giving the my local user usta 's password system says

cvs server: cannot find module `module' - ignored 
cvs [checkout aborted]: cannot expand modules 


What can i do ? Thanks for all replys