Ah, use the app to put the bootdisk on to the floppy drive and boot from that on your desktop.
This will not work anyway I will have to dig the DOS USB drivers out for ya, I'll dig them out tonight and document things a little better for ya and hopefully provide what ya need on a bootable cd.
Sorry about that, i just assumed it was connected via a 2.5" - 3.5" IDE adaptor.