Unable renew public IP through CMD

Hi there, anyone can solve my problem?

Im using Aztech DSL 705E Modem.

I need to renew my public IP address through CMD command easily.

Previously im using some other model of Aztech modem, able to do so… but now unable.

This modem got selection on LAN setting = DHCP Mode [Disable/Server/Relay Agent]

Could anyone senior here please do guide me to make it possible?

Current setting :

HTML Code:

---

Windows IP Configuration         Host Name . . . . . . . . . . . . : indranx-home
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter streamyx:
        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : VIA Rhine II Fast Ethernet Adapter
        Physical Address. . . . . . . . . : 00-19-DB-67-84-73
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.1.2
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.1.1
        DNS Servers . . . . . . . . . . . : 202.188.1.5
                                            202.188.0.132

---

Regards,
Indranx