Cookie Password Protection v2.9 just got released over at XavierMedia.com. Some of the new features are:
* Multiple membership lengths and prices (one for each user group)
* Up to 6 additional fields for user information
* Updated payment features for paid memberships
* Users trying to log-in with expired accounts will be asked to renew
* No-cache features so the browser back button will not work if the user is logged out
* Some bug fixes

If you have an older version you can download an upgrade at www.xaviermedia.com/download/.