So that last command should simply be
sudo apt-get install libboost1.37-dev
Except that wouldn't work for boost 1.40+ (on Ubuntu 10.04), where you need to get libboost-all-dev.sudo apt-get install libboost1.37-dev
Seems they changed everything around in Boost recently, "-mt" and all that, makes it hard.
BTW, I tried Boost 1.34 but it didn't have the boost.interprocess stuff.
Mac OSX version is available now. See bitcoin.org or the SourceForge link.