Am I exempted from CS foundation course after graduation??? What are the basic rules for it???????

Yes, you will be exempted from CS foundation course provided are a Graduates in any discipline except Fine Arts, with minimum 60% marks. Certain non-commerce graduates like B.Sc also are given exemptions.

Basically the CS course has following three stages:

Foundation Program
Executive Program
Professional Program

You will get admission in the directly Executive Program, the eligibility for this program is as following:

Executive Program eligibility:
You should be Graduation Pass or Foundation course pass of the ICSI