Your UA-1D uses the generic USB Audio driver provided by either Mac OS or Windows. So there is no need for a "driver" CD.

If the Windows driver installation program prompts you for files, they will be located on your Windows CD-ROM. If you do not have a copy of Windows, or if you have a system recovery CD instead of Windows, you will need to contact your computer manufacturer for any files needed by the driver installer program.

I the Mac OS does not recognized the UA-1D, try a newer OS. Mac OS 9.0.4 is the required minimum.