Try this link to the UltimateBet website:
http://www.ultimatebet.com/learn-pok...ournament.html
It includes a series of articles by John Vorhaus (whoever he is, someone please feel free to enlighten me) dedicated to heads-up texas hold'em play.
"Matchplay for fun and profit..." (parts 1 through 10).
I haven't had much chance to put all his tips into practice. Let us know how get on.
Cheers, Phew.