The freelancers can build an entire website, help you install software on your server, transcribe audio files, perform SEO analysis...and much, much more!

Determine first exactly what you want to accomplish, and create a project to post on their website.  Very quickly, programmers from around the world will start bidding on your project.  You can review feedback and communicate with the candidates before you choose your programmer.

Once the project is finished, you send money through your Scriptlance account, which then pays the programmer.

I can't say enough good things about Scriptlance.com.