drive repair tips?

I have a Nokia cellphone wall-wart charger that is held together with such a screw. (So far it's the only use I've made of any of the tri-wing bits - taking that apart out of curiosity.) I don't think I've ever seen that, neither driver nor screw. Perhaps they're more common on the European side of the pond? I seem to recall Tony talking about them a lot. The description makes it sound as though a flat-blade bit should work, if it's the right width to fit snugly into a diameter of the cylinder; it should fetch up against two of the splines, and while it likely would bend them out of true, it seems it should drive/draw the screw. Or have I misunderstood? /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B