phd in chemistry

Hi all,
I am a new member. I have a question regarding admission in phd chemistry in USA. I am trying to get admission in Phd last year. But I got rejections in all the universities. I don’t know the reason for the rejections as I am new to this system. I am a permanent immigrant to this country. My whole education is from India. I gave my GRE last year. Any body from central America specifically from Texas. Will I get chance to get admission in Phd. Can anyone guide me for this? What is the procedure to get admission? Is it really worth to meet professors of university before the admission in the phd? As I am totally new to this system.
Thanks,

You should probably post your question here:
http://talk.collegeconfidential.com/graduate-school/

ok…thanks sherpa!!! actually I’m new for this.

OP has already started that thread so I will close this one