Site Login Consolidation

-I have 2 sites that I need to consolidate the logins and passwords for. One site uses flash and I have the flash source files. -I need to make all pages behind a private section on the one site available on a new site. Each user must be able to access and view the private area from both sites using the same login and password. -I also would like a "foreach" error identified and corrected I would like to consolidate 5 site navigation links into one and display the five on a second tier.