Hi,
you can do it by means of:
1. Multi-boot CD. You can make this CD with this wizard =>
http://bootcd.narod.ru/index_e.htm. I have used it already 2 years successfully.
2. If your purpose is only to support different NICs rather then different boot floppy types then you can use Ghost Multicard Template (in Ghost Boot Wizard).
3.You also can make menu driven DOS 7.1 disk with MS Lanmanager (can be downloaded from MS ftp site).
Regards,
Yury
P.S. If you have PXE environment in your network you can make pxe menu file with links to these 6 floppies, then load them over network.