I dont know much about your subject (computer science) but I'll suggest to be really really sure of your topic (and not go by what other people might suggest) to be devoting some very precious years of your life to it
I am also intrested to do Ph.D. If you get any information then let me know.
At moment I am doing Mphil in computer Science. I have topic but I don't know the exact procedure for Ph.D. I am working so it will be difficult for me to do reqular. I can do only part time Ph.D.
My relatives are there in Bahadurgarh. If any one of us get relevant info then we can share. I am in Delhi