I may be wrong but is the Ultimate Book Disk
based on BartPE
? If it is it will not work on 9x
based Windows operating systems.
Another option is to run down to your local used computer store and pick up a 2-4gb used HD ( About $15) and slave it. Drag'n drop you files into the second HD.
If you have room to partition you HD you could do the same by making a second partition on the primary hard drive. This can be done with Digtal Dolly
(Hard drive utility). First create a folder to download DD to. Unzip it in that folder after it downloads. Burn an .iso image to CD. Boot with the CD. Resize C:\ partition smaller. Create and FORMAT the unallocated space to D:\ drive. Now you can move the information to the new partition.