If you're good with PC's, capitalize on that. Post ads with those tear-off "flags" on the bottom with your phone number where-ever you can : supermarkets, schools, churches, businesses, telephone poles, wherever they let you.
Get some business cards printed up for this and pass 'em out. They're cheaper than making your own on the computer.
No guarantee, but people are always looking for a GOOD, RELIABLE, reasonably priced computer guy.
Again, this really works best in populated areas.
If you want to do sound and you attend church, they are always looking for audio/video techs and that looks good on your resume, not to mention the references you can generate.