network-dns- resolv.conf on liveCD, can't connect to the internet

Hello, I'm a newbie.

My purpose is to connect to the internet and using installation online. I use FreeBSD 9.1 disc1. I install by using liveCD mode. I now got many problem. I can't edit file resolv.conf to change nameserver so that I connect to the internet. I still struck on these problem. I try to edit file, but msg shown " unable to create file "FILE_NAME"(resolv.conf) ". Another try, I try to using DHCP on interface LAN card. I don't know exactly the command. I try like these eg. ifconfig em0 dhcp please help me to solve these to be in case study for me.

Thank you very much.

Sorry for bad English and hope you guys understand my point.
 
I'm new to freeBSD but I'm pretty sure I can help.
Try sysinstall->configure->networking->interfaces and select your wired interface. Mine is rl0. Select no for IPV6 and yes for DHCP. That should fetch a DHCP.
I'm guessing that resolv.conf is on the CD and a CD is Read Only Memory hance CDROM. This means that you can't write to it.
 
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