Andy said:
Under Printer Port in Device Manager, check if Port Settings support
Enable Legacy Plug and Play detection.
That's indeed the way to do it.
You don't need an Iomega driver, at least I never did.
It's long ago I used the Parallel Zip 100 but I saved below info:
http://www.iomega.com/support/documents/10127.html
STEP FOUR - Enable the legacy plug and play in Device Manager
1. Right-click the My Computer icon and then click Manage.
Note: In Windows XP, you will need to click Start and then
right-click the My Computer icon.
2. Click the plus (+) symbol next to System Tools.
3. Double-click Device Manager.
4. Click the plus (+) symbol next to Ports.
5. Double-click the Printer Port icon.
6. Click the Port Settings tab.
7. Within the Filter Resource Method box, click Use any interrupt
assigned to port.
8. Click Enable legacy plug and play detection to place a check mark.
9. Click OK and then close the Computer Management Window.
10. Restart your computer for changes to take effect.
11. Double-click the My Computer icon.
Note: In Windows XP, you will need to click Start and then click
the My Computer icon.
If your Zip drive is listed with a drive letter, you are
now ready to use your drive.
If your Zip drive is not listed with a drive letter
assigned, please continue with the next step.
STEP FIVE - Change the parallel port mode in the computer setup (BIOS)
Some parallel port mode settings may not allow your Zip drive and
computer to communicate properly. On most computers, the parallel port
mode can be changed in the computer setup.
1. Refer to the documentation that came with your computer or
contact the computer manufacturer for instructions on accessing your
computer setup.
2. Locate the parallel port mode setting.
3. Set the Parallel port to Enabled.
4. Set the Mode to EPP or bi-directional. (Maybe ECP ??)
5. Set the I/O (Input/Output) address to 378.
6. Set the Interrupt to IRQ 7.
7. Save changes and exit out of the computer setup.
8. Restart your computer.
9. Double-click the My Computer icon to verify there is a Zip drive
with a letter assigned.
Note: In Windows XP, you will need to click Start and then click
the My Computer icon.
If your Zip drive is listed with a drive letter, you are now ready to
use your drive.