Dolphin invite a friend

i want to upgrade the invite a friend system, i want user to be logged in when he invites a friend if not logged in then he will be asked to log in to complete process, he will have the form to fill which includes a block he can enter 1 email or alot of emails separated by "," or ";" after these emails are sent, you will get an email to make you go to the site as normal invitation, but this part will be different, it will be directed to a page will you have 2 choices either sign in or sign up, if you sign in, you will accept/decline your friend's invitation, if you sign up then after you sign up you will see your friend's request waiting in the friends request page, also back to the part of the invitation, you i need to add import from msn/hotmail , yahoo and gmail the contacts

i think that will be all for now :-)