Please see the following link:
First of all I would like to up rise you that to get admission in the PhD (Computer science) program most of the good Universities would require that a candidate should have either done M.Sc, M.Tech, MCA degree or have relative degree so, I really doubt if your MCM degree would be acceptable for PhD in computer science.
However, few of the good Universities which you can consider for PhD in computer science are:
As far as the admission procedure is concerned it would be department specific. In most of the cases you need to sit for Entrance.