Short version
Need a second computer desktop Budget under $50, anyway i have seen a number of Lenovo ThinkCentre Core2Duo 3GHz on trademe in the right price range, but they all require according to the listings a Lenovo 130watt power adaptor, however when i go looking for such a thing on Trademe they don't seem to exist (there are 90w ones), anyone know
a) where to source these and
b) What the rough cost of them are

Long Version
Kids did something odd to my computer, decided to get separate machine for them , there seem to be loads of cheap dual cores settled on 3ghz as about right for what they want as after 3Ghz the prices seem to go up considerably.
There just seem to be loads of ex corporate lenovos at the moment, but they all require an adaptor/ powerbrick thingie,