Sharon, this forum is for JoomlaWorks extensions only, not for generic Joomla support :)

I would recommend you update Joomla to 2.5.28 (the latest release in the 2.5.x branch): downloads.joomla.org/cms/joomla25/2-5-28

Then you should be able to install some extension to export your data.

For further questions, please post about your issue either in the main Joomla forum (forum.joomla.org) or in the forum of one of the 3rd party developers of these import/export tools.