Aus consoles are PAL region

so the Xbox360 u gotten from Aus is region locked to PAL, means you'll be able to play games which are from PAL region only, or those region free games.

Games sold in M'sia are mostly from NTSC/J region, and it's hard for you to find a PAL region games here.

But there are a few PAL region console owners here, maybe you guys can setup an exchange club to exchange PAL games

My suggestion would be: sell off your console before coming back here, and buy a new one here to save you all of the hassles of finding a PAL game or region free games.