form created in ES4 won't save data entered in acrobat readerXI

I have created a large form in Live Cycle Designer ES4. If I save the form as a pdf and open it in Acrobat Reader XI I get the message that I cannot save data entered in the form only print it. All I want to do is to put the form on our web site for people to download, complete, save and e-mail it back to me. I did consider an alternative method which is if I distribute the form and take the distributed pdf and save it locally, when it is opened in Reader you get the submit button on teh purple bar on teh right hand side. This will confuse a lot of our users so if there is a way to not have the submit button then that would work but how do I stop the submit button appearing on the purple bar?