That post you are reffering to was about overdriving NO bulbs. All you do is get a two bulb ballast, and wire all of the leads to one bulb, hence overdriving. It can be hazardous though. They were having problems with premature bulb end blackening, and blackening end caps. Too much heat in the bulbs I assume.
If you want to see the safe way to do this, check out
www.garf.org They use Ice Cap ballasts to overdrive NO bulbs, with much sucess......HTH