Screen rotation is built-in into Einstein, it works very well on MacOS X (as full screen), it's just a little bit buggy on X11 and it needs more work. The file to work on is this one:

http://einstein.googlecode.com/svn/t...reenManager.cp

Instructions for building the binary are available on the wiki, here:

http://code.google.com/p/einstein/wi...ldInstructions

It probably isn't very difficult to build a Maemo interface, I'm just focusing on other parts such as the ARM to ARM new module (executing Newton code nearly natively on the Nokia and other arm-linux PDAs), especially considering that I don't have a Linux box with scratchbox installed, instead I use a port of the CodeSourcery toolchain that I made available through MacPorts.

Concerning the N800, Sean Luke got it running on his. However, when I tried on another N800 at the WWNC, there was a problem with libXau. I cannot fix that myself, but it probably is as easy as putting a copy of this new version of libXau and linking with -L instead of the path to the library.