I want to change this wording also.

Will I need to make this change again after every software upgrade?

Hello Adam,

So sorry for the delay in getting back to you. If you use the Joomla Language Overrides then there will be no need for updating every upgrade. Please check out how to do it here http://docs.joomla.org/J2.5:Language_Overrides_in_Joomla Hope this helps.

Thanks!