http://shop.brando.com.hk/pentopiazaurusstylus.php was the answer!
FWIW, I've been using this stylus right from the start (hey, I ordered it and received it before receiving the Zaurus! ) and it's very useful (I do really need the pen function in my styluses since I almost never carry a pen with me...).
That being said, the name of the stylus itself is a bit misleading. It's actually a two-in-one stylus with PDA tip + pen tip, I don't know what they call a "pointing tip"...
My majors complaint with it is that the pen cap often gets loose and fall from the stylus (it unscrews itself slowly when you use the stylus), so you have to regularly check that it's firmly screwed in position. Also, the stylus is very easy (too easy in my taste) to remove from the Zaurus, so when I put the Zaurus in its case or in a pocket, and when I remove it, I have to be carefull as the emerged portion of the stylus is often extended a bit outside the Zaurus instead of fully inserted.
But basically, this is a good stylus which I prefer to the original Sharp one bundled with the 3000.
