This instruction assumes that you use the plug-in 1.3.
1. You need to establish password less connection using the
public/private keypair (let me know if you need instruction for this).
2. Then you should configure plug-in to use any ssh client. You can
redefine CVS_RSH environment variable as described here:
http://www.pushok.com/soft_cvs_faq.php#4Alternatively in plug-in 1.3 you can press "properties button" in
"connect to CVS dialog" and choose "server options" page. You can put
there exact name to your ssh executable.
3. Configure ssh client and plug-in to use public/private key pair for
authentication. You can use "native" way for this. For putty it is
using of "pagent.exe" executable. For cygwin ssh putting yout private
key into your home directory. Alternatively under "server options"
page you can point to your private key.