Asian Champions League

How do they decide which two Australian teams compete in this tournament? Is it the winners of the regular season and the winners of the major round i.e. Adelaide and Sydney in last year's A-League?
If that's the case, does this mean Melbourne have already qualified for the Asian Champions League in 2008 and if Melbourne also win the GF, who will be the second team should Adelaide not make the GF this year? Would it be the 2nd placed team at the end of the regular season or the Grand Final loser?
If that's the case, does this mean Melbourne have already qualified for the Asian Champions League in 2008 and if Melbourne also win the GF, who will be the second team should Adelaide not make the GF this year? Would it be the 2nd placed team at the end of the regular season or the Grand Final loser?