[koraz]

I am sure someone can give you a better answer but as I understand, the Catholic Church use to frown on it but it is now accepted unless it is done for unsound purposes

[Mrs. Don-o]

The Catholic Church is against cremation IF the purpose of the cremation is to express contempt for the doctrine of the resurrection of the body (as was the case, I have heard, for atheists around the era of Voltaire and later, who insisted upon cremation for that purpose); IF it's meant to express a non-Christian doctrine such as pantheism; or if it's meant to disrespect the body of some disfavored group (e.g. cremating the dead who are from some despised race, nationality, or class.)

If those motives do not apply, and there is a legitimate reason to want to cremate a body (like in Japan, where there is practically no land available for cemeteries), cremation is allowed if the remains are treated reverently.