Maybe I was dreaming, but I was certain that the last time I looked, the only way to get a Checkpoint VPN client for the Mac was to buy one - for around $100.00.

Many months of fruitless attempts to get connected with other clients and combinations of utilities and clients later, I happened to do a search on Checkpoint and OS X, and landed on this page which allows you to download it for free. It actually worked the first time I tried it! Another piece in my Mac-in-a Windows-network connectivity toolbox, along with ProSoft Engineering's Novell NetWare client.