RE emissions light, Usually its nothing really serious. In Hondas it means the scheduled maintenence is also due. If its not around your sked maintence time, check your Airfilter and Gas Cap. If both of those are secure, there might be a problem and I would suggest you schedule a check up.
If you have the Accord, when you start it up, press the trip odometer down and hold it down for 5-10 seconds. This will turn the light off.
I just had 2500 worth of hail dents taken out of my car. If you live in the Dallas Area, PM me and I will get you the name of the guy who did the work for me. FANTASTIC JOB!!!
Problem with the dingking is that it can leave your car metal "wavey" unless you get the right size suction cup.
Good luck.