I upgraded from OS 10.5 to 10.6.8 understanding that Snow Leopard had the CAC reader capability but didn't meet with success. I'm now trying to find the drivers I need and keep running into walls. Mac OS Forge, the site that led me to this page, offers help with OS 10.5 and 10.7 but not 10.6.

Does anyone know where I can find the services update for 10.6 Snow Leopard?