You need an advanced model to do OSPF/BGP.
Baseline Models: The Baseline software license provides an entry-level solution for customer environments where features such as Deep Inspection™, OSPF and BGP dynamic routing, advanced High Availabilty, and full capacity are not critical requirements.
NetScreen-204 Baseline NetScreen-208 Baseline
Sessions 64,000 64,000
Concurrent VPN tunnels 500 500
Deep Inspection Firewall N/A N/A
VLANs 0* 0*
OSPF/BGP N/A N/A
High Availability (HA) Active/Passive Active/Passive
NetScreen Security Manager Supported Supported