Load SWF created by AC 3.0 to SWF in 2.0

Hi
please from all people who have experience i have i big problem i am doing my assignment and i should submit it on 29/4/2011. And i create some of document by Action script 3.0 and other by Action script 2.0, my question is how i can load SWF created in AC 2.0 via document has been created in AC 3.0??? i saw some of thread hear about loading but i tried it didn’t work please please any help