http://www.carrow.com/linkindia.html: Has links to various sites on India's laws.
http://www.helplinelaw.com/docs/bareact.shtml: This site provides on-line legal help and has links to the various sections of Indian business law.
http://www.manupatra.com/asp/home.asp: A paid membership site, which is an excellent source for legal research.
http://www.laws4india.com/: A site with lots of information on various Indian laws.