i cannot get a search engine to work
Hello johnh78028, firefox 19.0 it is not support your windows 2000 version, see: http://www.mozilla.org/en-US/firefox/19.0/system-requirements/
Firefox no longer works with Windows 2000
as you can see only Firefox 3.6.28 and Firefox 12 are the last versions of Firefox that will work with Windows 2000, and it is UNsupported.
See also Firefox 13+ in Windows 2000: