How to Hardcode password in cvsCheckout command?

Question

I am remote user to cvs repository and my CVSROOT is

:ext:aa81000@cvs.qintra.com:/opt/scm/cvs/home/repository  

and when run the cvsCheckout command it is prompting for password in runtime.My requirement is to wrote a shell script to do checkout on everyday so when i use cvsCheckOut command in shellscript it will prompt for password.Can any one tell how to input password for cvsCheckout at compile time i mean in the shell script.
Please can ay one help