You can get bootable floppy disk images in this website (may need to extract them with 7-Zip/WinRAR/etc), add the Adaptec update files in ImgBurn's Build mode, set the filesystem to ISO9660 only, set the floppy emulation parameters in Advanced -> Bootable Disc, then write the image/burn the disc. You can try on a rewritable or saving as an ISO for mounting on a virtual machine. As for the floppy disk, Win95/98 should be enough, as long as it has support for CD-ROM.