Okay, if you do have a network connection...
First, I assume you have a partition you could canibalize...
Remove that partition, and create and extended and put a FAT16 2GB in it. Reboot to a DOS floppy and format it. It will be C:
Restart in Linux
Attach to a NFS or Samba share of the win98 directory on the CD, on a hard drive or otherwise. Mount the fat16 partition, and copy the win98 stuff over.
Reboot to dos and delete the primary partition (non-dos) and create a new one in its place. Reboot it again, and format it. Switch to D: which is where you saved the win98 and install.