I'm looking for an easy-to-use and secure membership-type script. I want to sell a subscription or multiple types of subscriptions where I charge a fee to let people into certain sections of a website to download and/or browse forums. It doesn't need to be too feature-rich; simple forums, simple file areas. But I'd like it to look good, so either a good default "2.0ish" template, or easily moddable (like WordPress). What kinds of scripts/software (PHP+MySQL) do you guys know about that can accomplish that? TIA.