trying to run Squid behind firewall

I am trying to configure SquidPatch2 to operate behind a firewall by
defining "inside_firewall" parameter in squid.conf and also by trying to
define a parent (Netcache) cache which is connected to internet directly by
using "cache_host proxy.test.deere.com parent 8000 3130 no-query default"
parameter setting. But gets following error on any external URL like:
While trying to retrieve the URL:
http://www.sun.com/security/wp-sec.mgr.plp/

The following error was encountered:

     Unable to determine IP address from host name for www.sun.com

The dnsserver returned:

     DNS Domain 'www.sun.com' is invalid: Host not found (authoritative).

This means that:

 The cache was not able to resolve the hostname presented in the URL.
 Check if the address is correct.

Also the squid.out shows following errors on startup:

1998/10/20 14:13:45| parseConfigFile: line 180 unrecognized: 'cache_host
proxy.test.deere.com parent 8000 3130 no-query default'

1998/10/20 14:13:45| parseConfigFile: line 1664 unrecognized:
'inside_firewall deere.com'

Are these parameters supported on SQUIDPATCH2, these are listed on
http://squid.nlanr.net/Squid/FAQ/

Atatched is my config file, please advise.

 <<squid.conf>>

Thanks.
 
                                                                     
Zafar Ali
Public Network Access
Deere and Company
E-mail: alisyedz@jdcorp.deere.com
Ph: (309)765-0318
Fax:(309)765-5242