My mother in-law recently passed away and the appointed executor is not interested in acting as executor. Does the will have to be changed in order to appoint a new executor? My wife (the deceased's daughter) is retired and has the time and is willing to take over the position and her sister (the executor) is agreeable with the change. What has to be done to make it official?

The will cannot be changed, but the court can appoint a new executor if the one appointed does not want to take the responsibility. Have you browsed through the information in LawInfo's Free Legal Resource Center to learn more about your issue yet? See: http://www.lawinfo.com/consumer.html and http://resources.lawinfo.com/en/index.html. You can certainly try to speak to a lawyer to determine what legal options may be available. In the meantime, you may be able to learn more on your own. Search the "Free Legal Resources" tab, or browse the Consumer Resources. Good luck.