David & Jean-Marrie - we've put up a page on Warranty at: http://www.czechsportaircraft.co.uk/content/csa-warranty - this should answer most of your questions, and also allows you to download the actual PiperSport warranty document (nb you need to be logged in to see).
The answer really depends on if you have a SportCruiser or PiperSport, and the locality where you are located. NB - note that new warranty (for PiperSport is 500 hrs / 500 landings / 5 years - whichever comes first. In Europe this will always be min 2 years for consumers, even if you do 1000+ landings as the law requires this, but I guess this is not true everywhere.