do you mean just the title that reads "Real Estate Database" ? If so, then you can change it in the language file. it is in the file en-GB.com_misterestate.frontend.ini (for english version, for other translations the first part of the filename will be different) - this file is in the "language" subdirectory off the root directory of your joomla install.
A good feature enhancement would be to be able to edit the language fields in the Admin panel.
