Top Site List - Provider

I am looking to create a website which users can go to create an account and then create their own custom top site list. I want them to be able to pick the colors, the header image for their topsite the name and where they would like ads to display. I would like the script very similar to the script used to create; [login to view URL] [login to view URL] [login to view URL] I would like it to be in php code, I have some experience with it. I will design the site myself I just want to be able to place the php code where needed on a page for them to be able to login and customize their topsite. More examples of what I'm looking to provide is below: [login to view URL];cat=general&ID=80 you vote for the members site on a Gateway page (Where I have custom Ads display)then you enter the top site list where I will also have additonal ads display, along with all the members and their links for the particular topsite. There are numerous free topsite scripts, but I'm not looking to make an individual topsite. I want to provide a service where people can come to my site and create their custom topsite list and manage it (them being the admin for their topsite) and I can have custom Ads display according to the category they select when creating their topsite. I will also like to be able to manage all the top site list created on my site to make sure content is valid and not offensive. I put the budget for $30-$250 because this is a very straight forward script I would like to have everything same way it is setup at [login to view URL] Same script would be fine with me just don't know how to contact the creators. I would like a more advance one if possible.