Although technically it may be possible to get your
boot disks to work, I don't think anyone will be able
to help. The issue is that the image booting code
creates a virtual disk for the image, but your images
expect to be swapped out on the same drive letter.
The only solution is to merge these into one image, but
since together they are larger than a floppy, you'd
have to create a hard disk image. Various issues and
problem can arise from this. You can check out
http://www.wolfgang-brinkmann.de/bcdw/index_e.htm for
possible solutions. (Check the FAQ)
Perhaps you could tell us what you want to accomplish
so that we can offer alternative solutions. (Booting
to W2K just for the sake of booting doesn't do you
much, what is it that you want to do once booted?)