Wow, dude. Do I look like a cowboy to you? And if I contact the wrong pins? I guess theres no power, but still, I wouldnt risk it.
None the less, Im currently at work, will only get to try this these ideas out tonight.
If you contact the wrong ones, nothing will happen. Seriously. Just unplug the little wire, and touch those 2 pins with a screwdriver or knife blade. Don't keep it shorted, just make the contact, it should turn on instantly.
It's a VERY low current, just to give the PSU the signal to turn on or off, it doesn't work like the old-skool 386 or Pentium PSU's where the whole current goes through the power button.