php expert needed for design and code modifications - repost

We have an existing client site that we want to make changes to. The site is [login to view URL] . we need to make some functional changes to how content is displayed and how voting logic works: Logic Changes: Users should have a list of the top 100 girls - 30 per page and they can view the profile of each girl and then vote for them after logging in. Authentication changes: Both voters and contestants will have a simplified login/registration process requiring them to have a facebook account. The user can still choose which photo to submit and must be able to choose their own username. no facebook details will be displayed on their profile. it is used for authentication only. The chat feature needs to be disabled for now. this means that users cannot message contestants Display The way each girl's photos are displayed needs work. the system re-scales the photos to a horiible size. the rescaling should be automatic and much more clearer To use as a guide: Ideally i would like the site to look and work as much as possible as this one: [login to view URL] . it is in russian so you need to use a translator All parts of the site need to be managed through back-end control panel similar to the one we have developed (PM for showing you how admin section works which needs to be customized) Banner management system needs to be upgraded to something that makes managing banners easier if you look at the Russian site, you should be able to tell the programming logic that would be needed and of course the administration of the site. We have to be able to administer the site including new registrations, vote calculation, manage banner advertising, photo upload management, setting a start/end date of a competition, adding manual amounts of votes, displaying results of votes in a calculated way, banning a user, approving a user, approving a comment..basically its all functions that would go with the russian site. i have already spent quite a lot of money creating the initial site including the back end for managing all the processes. it was writing in php but not very elegantly written at all and i really dont like it but if it will save time instead of starting from scratch its worth using. So in response to your question, there wont be any major modifications, only what is part of the project as you see it on both sites. no other features. for instanace managing the content on the front page like latest news to be displayed on front page, facebook plugin to show users and so on PLEASE ONLY BID ON THIS IF YOU HAVE DONE SIMILAR WORK TO THIS AND HAVE A GOOD GRASP OF THE ENGLISH LANGUAGE. ASK AS MANY QUESTIONS AS YOU LIKE AS THIS IS NOT THE FINAL VERSION OF WHAT NEEDS TO BE DONE.