[KevinP73]

First I would identify any source of ignition. Pilot lights, open electrical motors including your compressor, CLOTHES DRYER!!. Even switches that spark when you flip them. Although it may be an indication of too much time on my hands, in a case such as this I would favor the "positive pressure" technique for air handling. Positive pressure will have a lesser tendancy to suck dirt in from under your booth walls or in through the cracks. Also the air flow through the fan will not be saturated with paint fumes and solvents. A proper resperator is a must, and wear a painters siut. You can get them at any hardware store for under $20.00. Make sure you have a couple GOOD extinguishers handy as well as a garden hose.
Start painting early in the day and take your time. Let the garage air out as you go. Not only will this make it safer it will improve the quality of your paint job.
Last but not least........ Post them pics, we love to see them.