On August 6, 1999, at 0930 central daylight time, a Cessna 172P, N933LA, experienced a nose gear collapse during a bounced landing at the Waukegan Regional Airport, Waukegan, Illinois. The pilot was not injured. The airplane was substantially damaged. The 14 CFR Part 91 personal flight was operating in visual meteorological conditions. A flight plan was not filed. The flight originated from the Aurora Municipal Airport, Aurora, Illinois, at 0850 cdt. The pilot reported he made the landing approach to runway 23 (6,000' x 150') at an airspeed of 80 miles per hour with the flaps extended. He reported that the airplane bounced four times during the landing touchdown. Inspection of the airplane revealed the nose gear collapsed and the firewall, engine mounts, and fuselage skin were damaged. The pilot reported the local winds were from 270 degrees at 10 knots when the accident occurred.