Windows 7 - Firmware update for my modem

I know this might not be the place for this question but i have just downloaded a Firmware update for me modem but the files came in .rom and . bin and i am unfamiliar with these files how do i open them or with what do i open them with???

Your modem will open them. In the firmware update page, it will ask you to point to or upload the firmware file.

Host Name:
Model Number: P-660HW-D1
MAC Address: 00:02:cf:7d:6d:66
ZyNOS Firmware Version: V3.40(AGL.3) | 05/29/2006
WAN Information
- DSL Mode: Error
- IP Address: 80.222.241.1
- IP Subnet Mask: 255.255.240.0
- Default Gateway: 80.222.240.1
- VPI/VCI: 0/33
LAN Information
- IP Address: 192.168.1.1
- IP Subnet Mask: 255.255.255.0
- DHCP: Server
WLAN Information
- SSID: ZyXEL
- Channel: 6
- WEP: Disable

Okay i do not know if it supposed to say it but DSL Mode Error, it kinda scares me that something is wrong with the modem!!