Yeah, the 6th gen service light will kick on at different maintenance intervals. If you want to reset it, hold down the odometer reset button and turn the ignition to the fully on position (do not start the car). Continue to hold it down for about ten seconds. That should do it. If it's flashing to report a problem, you can probably find the codes by doing a search on http://www.google.com for "ECU trouble codes 99 Accord". You'll probably be able to find a sight that lists the different codes. I would also recommend against driving the car until you figure out what's causing that light to kick on.