Contact form maker

I’m building a MAMP sandbox on my Pro, to better understand my wordpress.com CMS (thomasdocheri.com). I may move from .com to .org but at this point I’m trying to understand the structure and art of wordpress.org. My first step, almost completed was to build my sandbox exactly as my real .com site is configured. Problem is, twenty-eleven .com theme contains a default contact form builder and the .org version does not, or at least, my implementation isn’t working. I exported the XML at .com and imported into MAMP. This code works in .com:

[contact-form][contact-field label='Name' type='name' required='1'/][contact-field label='Email' type='email' required='1'/][contact-field label='Website' type='url'/][contact-field label='Your Message' type='textarea' required='1'/][/contact-form]

The above code does not resolve in .org. I see the HTML when I view the page containing my contact form.

I’d like to install the exact contact form builder feature or plug-in that the .com twenty-eleven contains. Once I’m satisfied I have an identical sandbox I’ll begin the serious customization.

Thanks for your help.
Thomas Docheri