Ok,
There's stuff like amember pro if you're willing to pay. IT sure wins hands down IMHO. The support is top notch and it has the advantage of being able to accommodate different "products" or membership levels.
Free stuff will surely lack in functionability. So for the time being, you could be using passpal, avalible at
http://www.eliteweaver.co.uk/passpal/
If that helped you NP$ would be nice, since I spent about 15 minuites search for that information.
