Earlier today, I wrote about my issues with a conflict between Check Point and Netscreen VPN software. Well, I figured out how to make them work together.
I had the answer in my hands the whole time. Check Point software binds to the network interfaces on your machine. Once you remove this binding, Check Point refuses to work at all, allowing you to use the Netscreen software. Re-enabling this binding then allows you to use the Check Point software again.
To do this, select your primary network interface, and uncheck the Check Point SecuRemote binding, as indicated below.