I have put the NetBSD boot program in at
ftp://beta.datastorm.com/pub/NetBSD/DOSbootblock/

Get either the tar.gz or zip file, all programs in all caps is the   
contents of the archives, so you can safely avoid them if you get one of   
the archives.

Send me E-mail of your successes and failures.

Neat trick, copy the kernel, netbsd, to your root directory of your DOS   
partition and just run boot.com with no parameters. NetBSD will start to   
load off your DOS drive.  However, once the kernel gets past the device   
detection, you will be drooped into the debugger.  Not very usable, just   
an interesting exercise.

jam