On August 1, 2004, at approximately 0750 mountain daylight time, a Piper PA22-20, N3838P, was substantially damaged when it nosed over following excessive braking during the landing roll at White Sulphur Springs Airport, White Sulphur Springs, Montana. The private pilot receiving instruction and the flight instructor were not injured. The pilot/owner was operating the airplane under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the cross-country instructional flight that originated from Bozeman, Montana, approximately 45 minutes before the accident. The pilot had not filed a flight plan. The pilot said that he was getting his tail wheel endorsement and 15 hours flight time (with an instructor) for aircraft insurance purposes. He said that he had landed the airplane on runway 19, and during the rollout the airplane swerved. He said that he applied the brakes too hard, and the airplane nosed over on the runway. The left wing strut was bent, and the vertical stabilizer was bent and wrinkled. The pilot said that he passed his private pilot check ride on June 24, 2004; his private pilot license with assigned number was pending.