I'm one of those mindstorms users who makes my own wires and sensors on occasion, and would like to be able to use them fully integrated into the included software. I spent about an hour one day reading through the application web-based help, and noticed help documentation on sensor blocks not shown in the software block palettes! These blocks are meant to be used with the educational sensor/ motor RCX-to-NXT adapter, but the NXT can't tell the software what code blocks to allow the user to use and not to use. And, as far as I can tell, there is no sign of those sensor blocks, meaning especially temperature. My only guess is that somewhere on some lego website there is a add-on downloadable installer for those blocks, like on the education site. But the education world will not be using the software that comes with the shop-at-home NXT set, they'll be using Robolab 2.9. So they won't support any downloads for those blocks. If I happen to find (and download/ install) any extra blocks, I'll post the link here.