Whats your experience level?
Are you going to be going on site or just sitting at a desk repairing computers? Is this going to be software or hardware or both?
I would say anywhere from $8/hr to $17/hr depending on what you work on. I used to do basic computer repair (hardware installs, software installs) and I made $8 to start. After 1 1/2 years I was buidling 1U and 2U rackmount servers and setting up Win2k servers. At that time I was making $17 per hour because I was making our company a hell of a lot more money.
Its very hard getting a job at a local computer repair store though. Most all of them require the A+ certification, and most of the time you have to have the right "connections", meaning you have to have friends who can help you get the job.
