Link Building & SEO

I'looking to improve our ranking in the major search engines. Our objective is to achieve top 5. We need to do link building and once we achieve the top 5. We would also require to have it maintain. Following are some of the key words. Computer rentals (rental) Notebook rentals (rental) Plasma rentals (rental) LCD rentals (rental) Tradeshow rentals (rental) AV equipment rentals (rental) Copier rentals (rental Laser printer rentals (rental) Fax rentals (rental) There are more but I'll provide you all the key words once you are awarded the project.