Here is a link to a simple setup.
http://www.langfeldt.net/DNS-HOWTO/BIND-9/DNS-HOWTO-5.html
and
http://www.debuntu.org/book/export/html/85
In the sample I posted the domain name would be linux.bogus

Your file doesn’t have an entry at all for a .us name anywhere
You aren’t the server for google so these are wrong
www IN CNAME @
googleffffffffffffffff IN CNAME google.com.

or use this example
http://www.debuntu.org/2006/08/05/85-how-to-setting-up-a-dns-zone-with-bind9
;
; Zone file for debuntu.foo
;
; The full zone file
;
$TTL 3D
@ IN SOA ns.debuntu.foo. chantra.debuntu.foo. (
200608081 ; serial, todays date + todays serial #
8H ; refresh, seconds
2H ; retry, seconds
4W ; expire, seconds
1D ) ; minimum, seconds
;
NS ns ; Inet Address of name server
MX 10 mail ; Primary Mail Exchanger
MX 20 mail2 ; Secondary Mail Exchanger
;
ns A 192.168.1.5
www CNAME http://www.debuntu.org.
ftp CNAME ns
gw A 192.168.1.1
TXT “Network gateway”
mail A 192.168.1.2
mail2 CNAME otherbox
otherbox A 192.168.1.3
TXT “Otherbox”

This file does the following
# the adress of the name server; 192.168.1.5,
# an alias from http://www.debuntu.foo to http://www.debuntu.org,
(mind the dot “.” at the end of an external name),
# another alias from http://ftp.debuntu.foo to ns.debuntu.foo,
# An address for the local network gateway with a description
(this isn’t needed unless you need a local gateway in the file)
But in either case the Domain name should have an A record for whatever the domain name is yourdomain.us
or a cname or some referrence to it.

Add : you can see good and bad results of your entries using
http://dnsstuff.com