It should be possible. Your best bet is to inquire at a TES modders forum. The same thing should also be possible for Oblivion if it hasn't been done already.
Well, took your advice and posted on the Bethesda modding section for Morrowind. http://forums.bethsoft.com/index.php?/topic/1156046-ati-eyefinity-mge-questions/page__gopid__16925751#entry16925751
Someone already posted and mentioned that it may be a simple reconfig of the INI file, but that he wasn't sure. Guess I'll have to wait for someone more mod savvy than I.