apt-get with proxy username and password

[Gareth <gwalters@crash.une.edu.au>]

G'day all,
             I am having some problems with the new network setup at work.
The powers that be have passed on internet costs to individual sections
anin order tinforce this have added a password/username authentication
to the web proxy. My problem is how do I get apt-get to use my usend 
password with the proxy?

I havtried to use a line like this in the apt.conf
http::username:password@proxy.domain.au:port
but nothing seemed to happen.

Is there anything else I can do?
---Gareth