119690 PHP / MYSQL Login System

Hello, I am looking for a programmer to finish coding the user login script for my website. The registration scripts are currently working, inserting the user info into the DB. Please see attached file for table structure. Password is encryped using 'SHA' The login script is currently not working, I am unable to get access into the [login to view URL] page. When I try and login with an account that has been activated (activation_code = null) it keeps spitting out: Incorrect login details, please try again. Error message ?? I added an echo statement to show the ‘result' and it looks to be receiving the right user/pass. I have used the script on other sites with no problem, I just cant work it out. The only thing that I have changed is that $username is the login not the email address of the user like on my other sites. I have attached the login page and the members page for your reference. The other thing I need done is adding a 'Who's Online' feature, a page ([login to view URL]) that will list the amount of registered members and or unregistered members (guests) currently browsing the member pages. I will eventually link this list to view each members profile. Similiar to something like this: [login to view URL] * DB setup file to be created * config file for whos online settings * Must be incorporated into the existing script, not vice versa. Thank you for your time :)