wordpress fixes

An already website using wordpress is running. The fixes which must be done are: 1. Sign in, sign up, and login page to be like modal box and not separate page. 2. Change share buttons into posts. from bottom side to right top side. 3. Facebook connect already working, just enable autoshare to user timeline, when the user make new post to wordpress. 4. When the user edit his posts.. when he click the "update post" button, now stays in same page. we want to redirect him to that latest post page. 5. Invite page, which a user can invite his friends using email or if he connects with Facebook (Facebook connect) to retrieve all available friends list, and next to each friends name to have an "invite" button. If user click on that button, a invite request will be send to that user inside Facebook. Guides, printscreens, and more.. will be given to the programmer. PM for any question or any print screen.