How to allow Protected Content members to create pending posts

I am building a site that uses Protected Content plugin to sell memberships to a community that allows members to posts new topics (in addition to commenting of other people's posts). I like the way WPMU's displays its own list of help topics, and allows people to post new topics right within the web pages. When people become members through sign up process, I have 3 related questions: (1) how do I allow them to create their own posts through the web pages instead of through the WP admin? I think the WP admin is very unprofessional, so I want a way for people to generate posts directly from the web pages. (2) How do I hold their posts in pending mode until an admin approves the post for publishing. (3) What plugin do you recommend to achieve what I'm trying to do if Protected Content alone doesn't provide this ability?