I can't ping google.com with my virtual ubuntu 12.04 server.

I have set up a proxy URL in my /etc/apt/apt.conf file and it says
Aquire::http::proxy http://urlname.com:9999;

Now, I don't know a lot about how the proxy works, but I do know when we use it on windows VMachines it's a pac script that we place in internet explorer LAN settings and it automatically detects the script and gives internet access.

I tried including the 9999/proxy.pac in the apt.conf URL and it didn't seem to work any better.

Would ubuntu know how to handle a proxy.pac assuming it was created for windows? Should my URL include the .pac or just end after the port numbers? I've tried both without sucess, but I would like to know.

A quick test to ping a fellow co-workers' PC was sucessful. So I can see network computers, but not google. or other internet sources.