Customization of Script - repost

I have a website wich needs some customization. This is a script named fiverr script and its installed on my website ([login to view URL]) Here is what i need: each job should be associated to a location: you have to create a new field in the (new service page). when a user is creating a NEW service, he must be able to choose a location for that service. then, i need that same "location chooser" in the sidebar below the search field in order to let people search services in a specific location. The default value will be "all locations". the same "location chooser" goes in the green area of the sidebar... so when a person suggest a new service, must select a location. Display the locations of the services next to the username in the homepage listing. And also in service description page.