Download three .dmg files
For OSX 10.8.2
1. Install Samsung-GDI
2. Install Foomatic-RIP
3. Install Ghostscript
This is essential otherwise the pages won't print correctly.
Find the PPD file
Scroll down the page and select the relevant printer. Click the link.
Download the PPD file
Link takes you to openprinting.org
Download the PPD file and store it on your harddrive where it can be accessed by the Printer Setup Utilty in system preferences.
I don't know if it it OK to delete the file after installation, so I am leaving it there.
Add new Printer
Connect up the printer over USB
Add new Printer /cont
Select Add Printer or Scanner
Using the correct PPD file
Select Samsung ML-1210
We are going to override the default driver shown in the 'Use' box.
Select the PPD file
Click 'Use' and then 'Other'
Find and click on the PPD file you downloaded and saved.