Your post is some what confusing. From what I understand, you have a Puppy linux CD, and want to install Puppy to your hard drive. You say you can not mount it.
To mount a CDrom, floppy or any hard drive, you need a linux system booted. Then mouniting is possible.
Have you got a linux system installed, and can you bbot it?
If you want to boot Puppy form the CD, you don't mount it first. You go into the BIOS on your system and set the CDRom as the first boot device. Put the CD in the drive, and power up. Then the system can boot from the CD.
As for yor printer problem, we can take a look after we sort out the first problem.
Please clarify the above, and we'll go from there.