Help with modal for Facebook register & newsletter sign up?

2 questions.

First, can you recommend a modal plugin that works well with this plugin? I was using Simple Modal Plugin before, but it doesn't work (just shows normal register, no facebook).

Second, is there a way to add in a check box for a newsletter optin (i use mad mimi), I was looking at using CIMY extra fields, but I really don't want to have that many plugins just for login/registration.