GridGammon stores your login nickname and password in your Mac OS X Keychain (this option is on by default, but can be turned off in the Connect window).
Storing your information in the Keychain makes it quicker and easier to log into GridGammon. In General Preferences you can set GridGammon to connect automatically whenever you launch it. If you prefer to use the Connect window, the most recent nickname and password are set up in the window, so you only need to click "Connect".
Using Apple's Keychain Access application (in your Utilities folder), you can examine your GridGammon password. This may be helpful if you need to recall your GridGammon nickname and password to use on another computer.
Do not use the Keychain Access utility to change your GridGammon password, since Keychain Access has no way to notify the GridGammon server about the change. You should use the GridGammon application to change your password, these changes will automatically update the Keychain info.