Compressing Files

Why do you say thos sites are not allowed? Who does not allow it? Is it not allowed by your company or your university or your country? I assume it is not India so perhaps you are in a different country. If you can explain why you are not allowed then someone can try to help.

query got resolved?

In my concern those sites are not allowed..That's the problem of me..

Did you see articles listed in the right side of this post?