Just did Round 2, to make sure that I document it correctly:
0.) setup USB stick, by way of the above directions.
1.) Booted the netbook off the USB stick with bsd.rd
2.) Used the "Shell" option
3.) Mounted the installation (sd0a) on /mnt
4.) Swapped the USB stick to my laptop
5.) Reformatted it as a FAT32 disk
6.) Mounted it (sd1i) on /mnt2
7.) dd'd the first 512 bytes to /mnt2/openbsd.pbr (dd if=/dev/rsd0a of=/mnt/openbsd.pbr bs=512 count=1)
8.) Umounted the USB stick
9.) Booted into Windows 7
10.) Launched cmd with admin priev'
11.) copy D:\openbsd.pbr C:\openbsd.pbr
12.) Reboot
Now if I try to boot it, it gives a Status of 0xc0000001 with an info of "An unexpected error has occurred". At least, I assumed the raw mode device is supposed to be used rather than the block; and
this makes me think that's fine.
I've tried booting it with the systems "boot booster" enabled and disabled for good measure.