To use Plink with CVS, you need to set the environment variable CVS_RSH
to point to Plink:
set CVS_RSH=\path\to\plink.exe
You also need to arrange to be able to connect to a remote host without any interactive prompts, as described in section 7.2.2.
You should then be able to run CVS as follows:
cvs -d :ext:user@sessionname:/path/to/repository co module
If you specified a username in your saved session, you don't even need to specify the ‘user’ part of this, and you can just say:
cvs -d :ext:sessionname:/path/to/repository co module