Hi I was unsure if I should publish it at all, since there are unofficial debian packages at http://www.debianplanet.org/mono/ , which I heavily recommend to use, but in the light of the Mono 0.24 release, I decided to announce my step-by-step installation guide to Mono on Debian Woody, since there aren't any woody debs yet for version 0.24.
You can find my guide at http://n.ethz.ch/student/awuest/debian/mono_installation_woody.html . Unfortunately, the mono runtime doesn't seem to build on my machine with garbage collection enabled. This wasn't very bad on 0.23, but with the 0.24 release, there comes the new JIT, called mini, for which the configure script doesn't build the Makefile correctly, i.e. it always wants a gc, even when there is none (which, of course, breaks make). So you have to apply a small patch, which is downloadable from within the guide or directly from http://n.ethz.ch/student/awuest/debian/mono_diffs/mono/mini/Makefile.diff . I don't know if my machine is the only machine on which it doesn't build with garbage collection, or if there exists an overall problem on PoewrPC, but the unofficial .debs seem to build problemfree on other machines (I haven't yet tried them on mine). If someone of you is going to follow my guide, I would be very happy if he or she could send me a short email, telling me if it works or not on their machine with gc. -- Best wishes, Andi