Haven't earned 1 bitcoin? That's plenty even with a small ASIC. Anyway before starting to mine with heavy equipment you might want to try some small alt-coins to get used to the concept and possibly make something sijce alt-coins difficulty isn't as high as btc's.
I'm only getting 28-30 Mhash/s with the 8800GT. I will say the time I have been pooling has been up and down while trying to make things stable. My current reward is 0.00020471 BTC from Nov 26th. I meant mining for one month not two. My mistake.
I've looked into LiteCoin as well. The mining programs for that keep crashing or freezing my system. I'm sure a little more research will solve that.