[SoaS] Installing SoaS to USB MSD using Linux

[smiley at zenzebra.mv.com]

Hello... I'm brand new to SoaS, and hoping to help a local school with
it.  But, before I do that, I need to figure out how to install SoaS
so I can become familiar with it first. :)

Can anyone explain how to install SoaS to a USB drive using Linux?
The SoaS wiki appears to have executables for installing from Windows,
but that doesn't help me. :(

I'd imagine it'd be as simple as untarring a filesystem, changing a
few config files, and partitioning correctly, but I can't find any
instructions on how to do this.

Help, anyone?