I haven't had any experience with websites providing that specific service, but there are many websites where you can post projects like this and have bidders place bids on your job.
Basically, you would post a description of the job that you needed done (like you already did here), and bidders would come and tell you how much they would charge you for doing that job and how long it would take. You would then talk to those bidders about your requirements and their know-how, then choose the best one. So it's like Ebay, except the person posting the job is the buyer.
The biggest such websites are Freelancer.com, eLance, and oDesk. I've used them all and they all work about the same. These days, people can do any job that can be completed in front of a computer. Pretty sweet!