Missing mbstring PHP extension

I have recently installed Joomla as a one click install and uploaded my test site to www.now.imnotafraidpublications.com . Im my PHP Administration I get a warning at the bottom of the page that says:

The mbstring PHP extension was not found and you seem to be using a multibyte charset. Without the mbstring extension phpMyAdmin is unable to split strings correctly and it may result in unexpected results.

One unexpected result that I am getting is a failure to find where I can enter my poll questions in the poll module.

Thanks for any help you may have.


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