Help with adding code with jQuery, PHP and the MySQL database.

I have a page that needs some code added. The page: [login to view URL] [login to view URL] This part I already added: [login to view URL] For the registering ([login to view URL]) and the login I want to add: [login to view URL] (all options need to be added AND it has to work with the existing LOGIN and REGISTERING forms) For the filtering and pagination ([login to view URL]) I want to add: [login to view URL] (I want to have data from the database filtered and shown on the page, I will tell you which filtering options need to be used) All parts need to work with the same database connection file. The CSS of the different parts need to be aligned as there might be conflicts when the parts are added independently. At the moment the first page ([login to view URL]) has two problems that need to be fixed: - With the registering on step 3 there is no FINISH button. Probably a small mistake as it was there before. - The validation (when registering) on the NAME and EMAIL doesn't work yet. They need to be checked first to see if they're already in the database. If they're already in the database, there should be a warning. Last, regarding the registration. After registering a new user there should be an email sent to the user with a validation link. The user needs to click this link to activate his account. See above. I want you to use the example codes that are provided. I WON'T give you access to my server. I will provide you with the code that I'm working with, you have to check the code on your own environment. You have to explain me which files to put where, step by step and I want to understand how my code will be changed.