I'm confused, too, TheSportsTraine: references to PACT on both the TExES Web site and the Praxis Web site suggest that PACT is a series of tests distinct from either TExES or PACT (though still offered through ETS) - but one doesn't seem to be able to find any such tests. This makes me think that one might take the regular TExES test or a regular Praxis test but that, because one registers as a PACT candidate, one's test may get scored slightly differently. (I think most TExES exams include some information about teaching practice; those questions may not get counted, perhaps.) This page on the TExES Web site gives a contact that you might want to follow up:
http://cms.texes-ets.org/epp/epppact/.