I hope I undertand the question:
To have access from windows98 to linux box you have to set your win98 session username the same that you have at smbpasswd (i.e. nobody).
To view your win98 share from a linux box you can:
smbclient -L win_box_ip
After that you can mount the share in your linux box by typing:
mount -t smbfs //win_box_ip/share_name /mnt/wherever
You can also use a GUI manager to view, mount and umount shares. You can try: