Permissions of the checked out files.

[Jagan Nemani]

Hello 
Can anyone please tell me that how can I control the checked out 
files permissions using CVS... The permissions that I usually get on 
checked out files is rw-r--r-- But then I want the permissions rw-rw-
r--. It is increasingly difficult to go in and change the permissions 
each time any file is checked out.. Please suggest
Thanks
Jagan