The only information you need is nameserver(s), gateway, netmask, and the ip address itself.
To set the IP address and netmask:
# ifconfig <net_device> a.b.c.d netmask w.x.y.z
where a.b.c.d is the IP address, and w.x.y.z is your netmask
To set the nameserver(s), edit the file /etc/resolv.conf with the following syntax:
To set the default route:
# route add default gw a.b.c.d
For the proxy settings, it depends on the browser you will be using. For example, in Mozilla, it's Tools -> Options -> General -> Connection Settings.
This should be all you need to get your network configured. Hope this helps.