Andreas,

> Is there a way to boot an alternate kernel (i.e., something other than 
> /netbsd) via the Qube 2's keypad when using Dennis' bootloader?


 > If not, is doing so possible if I purchased a null modem cable?

You can invoke any boot loader you want when using the serial interface 
to specify one. Unfortunately, you can't load just *anything* using 
that; I've tried to load kernels directly. Some load properly, and 
others are too big for the primordial boot loader to handle.

-chris