If its a US dometsic machine it may not be possible to configure the transformer to 240V. The mains plug will tell you if its an American machione or not.. they have a flat active and neutral with a round earth.. sometimes no earth at all.
What i can tell you with no doubt whatsoever is that a 1000W step down is WWAAAAAAYYY too big for one Em game.. i have a 500W here that i run 4 woodrails off.
A 200W is more than big enough and has plenty more to give.
jaycar sell 200W stepdowns if you want it immediately, but if you can wait, then Ebay is much cheaper.
The wound type ( true transformer) are better than the electronic type, a wound type really should never fail.
250W right here..
http://www.ebay.com.au/itm/Step-Down-Transformer-ARLEC-/221007788073?pt=AU_B_I_Electrical_Test_Equipment&hash=item3375173829
