Make an appointment with the Apple Genius Bar and see what they can do for you.
Apple was doing a one time replacement as a courtesy only but this seems to have almost stopped, but you never know you may get lucky. We have a rather large thread on this topic, do a search if you'd like to have a read.
The IPad Forum is a community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the Ipad. There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions you have. If then you cannot find the answer you are seeking then by all means post your question. There are many friendly and informed members here only too willing to help you.