Customization for an Arabic PHP ads script

I installed a free php ads script in my website. I like the script but would like to do some changes/improvements as follows. 1- I want to add a new feature called "Featured Ads" where I can flag some ads to appear in the index page for one week, these ads are not free like other ads, payment could be made by depositing the amount to my bank account. There will be two type of these ads one for a higher price and another one for a lower price. I want to place 4 boxes for the ads of higher price in the top of the page horizontally, and want to put a banner above them and another banner below and small two banner in the leftside. I want to place 8 lower price ads under the second banner 4 horizontally and the other for below them, and a third banner below them 2- The ads classifcation should be only in the right side, the body of the index page will be as mentioned in point number one above 3- The ads boxes should include the ad title, body (not the detailed description), contry, city, contact (tel/email), and clicks count. The design of the ad box and the ad details page is exactly like the design in this website [login to view URL] 4- If the user clicks on any category to see all the ads, the ads are to be shown in boxes of 4 rows and each row includes 4 boxes, one banner above, one banner below, and two small banners in the left side 5- In the ads creation page, a new drop list to be added so the user can choose whether to place the add free of charge, or pay the higher fees or the lower fees, if the user chooses to pay, he can have a link to a page that includes my account number, where he informed to pay and put the account number in ad creation page so that I can verify the payment and approve the ad, however, the user should be told about the availability of the boxes before he pays the amount 6- The non-free ads are placed for one week only, after the one week they can be found under it category only, not in the index page 7- In the admin page, I want to add a section to enable my-self send emails to all the users 8- In the admin page, I want to add cities drop list which should make the search more easy 9- In the admin page, I want to determine the cost for the higher and lower cost ad boxes, and specify the number of rows to appear in the index page 10- I want to control the banners from the admin page, so that I can attach the pictures or flash files and they should appear automatically one I activate them, I should be able to put the effective dates for the banners. 11- I should be able to see the count of banners clicks, and should be able to put an email of the client to send him weekly report automatically of the number of clicks. I hope the above is clear, and look forward to assign a competent programmer with a competitive price.