What you can do is create a putty session and save it then instead of providing the host name to WindX provide the session name.
For example if the host is ourhost.yourdomain.com, then create a session in putty that will connect to that host and save it, for example, as myhost. Now in the WindX SSH host name field specify myhost instead of the server name.
You can also use this to provide SSH keys and pre-define the userid/password.