Setting up proxy

[Viswas Nair]

I am trying to setup a FBSD 6.1 machine at work. I have an IP addressed by a
DHCP server. However, to connect to the internet I need to use a proxy. How
do I configure the system to connect via the proxy?

I cannot use a browser in to do the same because I am presently trying to
install the window manager and other applications via ports.

Thanks in advance,
Viswas