For the thrifty among us... (ME!!) there's a method that works pretty well - and saves the need of buying expensive equipment -and finally makes use for that hot air corn popper that's been gathering dust since college...
You can use a hot air corn popper to roast the coffee - it creates a lot of smoke but it works pretty well - and it's an easy foray into the world or roasting...
Googled this site for instructions that seem close to the instructions I had..
http://www.sweetmarias.com/airpopmethod.html