I must admit it is harder than i thought to get internet working on Amiga. or mayby it is just me there is not very good at it 
Wireless is a bit of a pain in the ass to setup with a 1200, it can be done but you have to use basic security on your router.
A LAN setup is a lot easier of course, is that an option for you?
The easiest way to get online is to install EasyNet and just play with the settings until it all magically works, that's what I did anyway
Also please remember that going online with a 1200 these days is kind of pointless, most sites won't render correctly and it will be very slow and painful. I've got an 80Mhz 060 and my LAN card is still sitting in the box I brought it in, that should give you an idea
