Piratebox Gateway Problems. Help Requested.

Thanks for your support on my last post Nargren, but I have another problem and I'm hoping someone can help me solve this too.
Here's my problem.
I'm trying to connect my Piratebox to the internet, and when I did the VI thing whilst setting up for openwrt, I didn't get some stuff that I should.

config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'

config interface 'lan'
option ifname 'eth0'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This is what I got
(see how gateway and stuff are missing?)
I can't connect my piratebox to the internet or SSH into my piratebox whilst it is connected to the router.
Errr.
I read that I needed to change my piratebox's IP, (sorry if this is a noob question this is my first time experimenting with router flashing/openwrt)
but I can't see how? I went into the network configuration, (by SSHING into my router and using vi?)
and it won't let me change anything.
I also think my router is changing my piratebox's IP because when I plug it into the router I don't see 192.168.1.1 anymore, but when it's plugged into my macbook it works fine?
Thanks, I will monitor this post thoroughly.