Membership manager/payments modules or 3rd party integ.?

[kanjigirl]

CMSms doesn't seem to have any native membership management tools (I mean like club management where invoices are sent and payments are made annually, and members can change their contact info, etc.) - is that true or have I missed it?

Also, I'm wondering if I can integrate something like A-Member or http://www.interactive-scripts.com/php_mm/ in a way that logins to CMSms are carried over into the other script?