Reiki and Christianity

At this point I would say that there is a positive effect that a Reiki practitioner can make and that is giving attention and showing concern for a person who needs care and healing. One could also actually lay on hands and pray for healing in the Christian tradition.
A few sources or persons mentioned Attunement and I was sort of shocked to find the followings on Wikipedia at http://en.wikipedia.org/wiki/Reiki :
When the attunement is given, depending on the type of attunement, Reiki Symbols are placed into your Crown, Heart, and /or Palm Chakras[1]. During the attunement, Chakras are opened and cleared. Reiki symbols are used and there is transference of Reiki energy during the attunement. Central to this process is the establishment of a connection with the source of Reiki.
Now maybe I understand more how a Catholic Sister from India who teaches and gives spiritual direction in Europe has any of her directees who practiced or received Reiki to renounce in their heart this practice. A person we know who attended her retreat told us about how she had to do this.
Also, when I went to the web site of the Department of Evangelisation, Diocese of Johannesburg South Africa :
http://www.catholic-jhb.org.za/articles/reiki.html
they denounced Reiki and said anyone who received it(Reiki) should go to confession and then go to the Blessed Sacrament for a week.
From my experience in Africa and Central America, I know that many occult/weird practices have terrible effects and that the Catholic Church in general is very wary of many things. So, I have to have some respect to both the above opinions and practices.
So, where do we stand? Personally I have not integrated how going to some Reiki Master is the way to become a healer and pray-er using the Holy Spirit, I am puzzled about the path to this healing method. Any comments are appreciated.
John