Photoshop online trainer needed: 7-12 hour a week opportunity at $20/hr for native American English speaker

We are looking for an American English native speaker, to deliver a number of live, online training sessions on Photoshop CS3/4. Will start from Photoshop basics and move to advanced features. You should preferably have classroom training experience and are comfortable to deliver the content in a live, online environment. Variety in voice and intonation is also a requirement, since your voice will have to keep the audience interested in what you teach. Courses will be delivered online, so you need to have the software loaded on your computer, and an adequate internet connection (cable/DSL). We might later move on to Corel Draw teaching, so people with skills in both environments will have an advantage. This could be an ongoing role for 7-12 hrs a week, at $20/hr