Now it's not as simple as hooking the 12volts onto a 8-9volt regulator because the 78xx regulators (and most) are max 1.5a output. I found a part on the net (which I can't get) but the electronics stores here don't have it. It's a variable regulator that can output up to 5amps.
Anyways, I've read this from our dicksmith here and this is what it says
http://www.dse.co.nz/cgi-bin/dse.storef ... SUP1000037
I've gone and bought me a PNP transistor 'mj2955' I've wired it up according to the picture at dicksmith, but no luck.

Whenever I connect 'C' to my power output the regulator doesn't work and 12volts goes straight through, and when I don't hook 'C' up the regulator works but it still doesn't power the ps2. All it does is light up the light, I press the reset button to turn it on but it just switches off. Does anyone know if I am hooking this up wrong, or could help me out with this thanks.
[EDIT] Okay link was wrong, changed..