The Web site describes its objective in the following words:
Ancient-Future.Net ... exists to help individuals of all denominations and perspectives better understand Catholic Teaching, Practice, Spirituality, and Morality... However, we believe that knowledge is not enough; we must be equipped to not only understand, but also live out, the Teachings of Christ in our lives.The site is rich in content. It offers a large number of clear, informative and balanced articles: a summary of basic Catholic beliefs; brief answers to various objections to Catholic beliefs; various media (blogs, podcasts, discussion forum), conversion stories; prayers; art, poetry, hymns; and sermons.
With it's focus on explaining faith to those who come from other denomination this Web site can be a very useful resource for RCIA teams.
For other resources for RCIA: http://www.silk.net/RelEd/rcia.htm