Well enyone who was interested in this, I believe I have an answer. I PM'd xPETEZx and here is what I got. This is from a previous thread----
QUOTE
Very simpile.
Cut the 2 wires going to the Mobo Power OWN.
Then Wired one end to the Key Switch, the other end of Key Switch to one end of the Power ON button, and the other end of the power ON button to the Mobo.
Mobo >>>> Key Switch >>> Power Button >>> Mobo
But if this is a bit confusing for you, then here you go---
Right ok, first off, I would NOT recomend using ONLY a SPST switch.
As you said, you would hav to flick it back and forth very quickly. Which a. Could get very annoying, and b. will ware out the switch.
BUT if you have your mind set on it, here is how you would wire it:

I would RECOMEND that you either get a Push-to MAKE switch, and use that ONLY, or you could wire it like this:

If it was wired like above, you would need to flick the SPST switch FIRST, and then push the push-to-make (P-T-M on diagram) button.
This way your PC will only boot IF the Big SPST switch HAS been flicked.
I wired mine eXactly like above, eXcept for I used a Keyswitch in the place of the SPST (well, actualy, the Key Switch was a SPST aswell, just that u need a key to activate it)
Hope that helps.
If you have anymore Quieres feel free to ask and ill TRY and help you out.