If you want to make your own image:

1. Grab the most recent rootstrap image from the repository. At the time of this post, it is maemo-sdk-rootstrap_5.0_3.2010.02-8_armel.tgz.

2. Make an empty image file and format it using my instructions from this old post. You can do this on any computer.

3. As root, mount the empty image file, cd to the root of the mounted image, and untar the bootstrap into the image. This can also be done on any computer.

4. Unmount the image.

5. Use Easy Chroot (or do it the hard way if you insist) to chroot into the image! Remember to install the Nokia Binaries.