Dvorak keymap in single user mode

[Robert Downes]

I use the US Dvorak keyboard layout, and I find it very difficult to 
type in single user mode (when installing world, for example), because 
single user mode uses the QWERTY keyboard layout, and does not seem to 
pay any attention to kbdmap (I think that's the command name - the one 
with the interactive keymap chooser).

Someone suggested that it's possible to compile the Dvorak layout into 
my kernel, but how is this done, and is there an easier way of changing 
keyboard layout in single user mode?

-- 
Bob