SEO Needed for local companies in Las Vegas

I have serveral companies in Las Vegas that are looking for someone to get them on the first page of Google and Yahoo. Must be able to quote the job and deliver asap. I have 20 to 30 companies that are looking for this to be done. I will give you a website and you tell me how long it will take you to get them on the first page for a local search. Example Dentist - Las Vegas Insurance - Las Vegas I have access to 100's -1000's of companies that want this and don't have the time to find someone. I handle their Yellow Page advertsing and have an excellent relationship with my customers. NO BLACK HAT SEO please. You will be paid on each site done.