Really not much to tell you.  Using a non-ATI is borderline not worth the electricity it costs to mine in the first place, really as simple as that.
About "non GUI commands".  It seems like it would be hard at first, but a lot of that you can simply set up in a config file (fill out info in a txt file) and then click a bat to run. 
You could instead mine a CPU based alt coin, but you're going to need quite a bit of currency to ever equal one BTC.