How do I make a dynamic VPN connection from a Netscreen 5GT to a Cisco ASA 5510?

I have Cisco ASA 5510 configured as a VPN server at a static public IP address, and my various VPN clients are on cable modems at dynamic addresses.  I already have some ASA 5505 clients connecting to this server using "Easy VPN Remote" in client mode, and the server pushes routes to the client with little or no configuration required on the client side.

How do I configure a Netscreen 5GT to connect to the ASA vpn server in the same way?