Spiritual Path

I just happened to read some very inspiring links today. The story of Mrs.Sudha Murthy and the charity work by Nipun Mehta.They put me to a lot of thought. I have been trying to meditate from quite some time now with no success [Err: only recently I got to know there is no success or failure in meditation.. Interesting :)..]
So I want to do a course of Vipassana some time soon.
Anybody done this course ? No form of communication with anybody for 10 days sounds kinda scary to me and well also challenging :).