I have used an online service called Elance for about a year for various project outsourcing for my websites. Elance is a website that is similar to Ebay in that it is an auction site, except that you post a project (something that you would like to receive bids on) and the various service providers bid for the job you posted. It works similar to sending out a tender or RFP (request for proposal). You can use them for web development, graphic design, software, engineering, administrative services, business strategy, writing and more. Whatever you are looking for.
One word of advice, though. Just like hiring any service provider, I would check their references and their payment schedules. This is especially true online as you will probably never meet face to face with the person you are hiring for your project.
Registering and posting a project is free. I have included a link to the site on my SEO Tools page.