Security Assist and User Reg

I have just purchased the Web Development Suite and the User Reg Solution pack and i'm using dreamweaver cs4 and having a bit of trouble.

(1) I am learning (by reading these posts) that the User Reg Solution pack is not very customisable, although it does seem to work very well out of the box. What I wanted to achieve is a registration page that only contains email, pass, confirm pass, first name and last name, WITH captcha secuirty questions at the bottom to validate. Would I be right in saying that these registration pages are not customisable, even with Secuirty Assist?

I have tried deleting the additonal fields (phone, fax etc..) from the main user_registration.php and this results in errors and I'm not all that interested in hiding these fields as that is not a very professional approach.

(2) Secondly, Is it possible to use Secuirty Assist to do e-mail activation, whereby the users account will not go active until they have verified a link that is sent to them?

(3) Lastly, is it possible by using any of the web development tools to create either the image captcha or the security questions and add them to a form?

Thank you for your time!

Shaun