yabbas: Thanks, but I've already seen that. In fact I linked to it in my opening post.

maxilogan: Thanks for the info on maemopad. 2 levels isn't quite enough, though subpixel accuracy is the make-or-break feature for me. I'll see if I can find any info on these two features in maemopad's webpage or source code.

Anyone else have a clue about this?

TJ