How can I send my resume directly to the hiring managers of the leading companies?
I am an SAP HR consultant and looking for a job. I want to send my resume directly to the hiring managers in big companies like GE, General Mills, Levi's etc. How do I do that? I am on LinkedIn as well. Please help...

I would not advise you contact the hiring managers via linkedin. Based on what I know, hardly any people review their messages in linked plus it cost you approx $10 or so for each email on linkedin depending on the package you subsrcibe.
First of all, prepare a good resume and apply to jobs on monster or career builder. SAP HR is in good demand and if you are well qualified the HR personnel posting jobs will surely appreciate your background and so will the hiring managers.