I am sooo excited! Using the links and info provided, I was able to get my Mac G5(OSX 10.2.8) to print in color to my Dell 2130cn. My Mac lives in a PC environment and prior to this, I had to create a PDF file and email it to my Dell computer, in order to print.
It is also printing Landscape documents. The only software I've tested it with is FreeHand MX, so I'm unsure if it will print successfully in other programs. My first test page I tried print from Safari, and it did not print. For the heck of it, I tried to print the FreeHand file I needed, and it prints beautifully.
I did one thing different. The instructions to add the printer in Print Center by clicking "Option + Add" and using "Advanced" in the menu did not work. I could not find my printer in the list as instructed, and the "Add" button was grayed out, so I could not add anything I tried.
What I did, was to click "Add" then used "IP Printing" in the menu. I entered the printer's IP Address (which you can find by printing off the Printer Settings from the printer itself), and under Printer Model, I selected Dell... then from the list that appeared, I selected the Print Driver which was downloaded using the links above "Dell 3100cn Foomatic/pxlcolor (recommended)"
It works great with FreeHand MX! I hope my other software will print also. Thank you for all the information!