Well if you are gpu mining we need to know what cards you have so we can caculate the has rate, if you are CPU mining quit now it will take you a good 50 years to mine anything at the current difficulty.
Like he said, its all gonna depend on your Mhash/s... If its high enough, you can go solo and possibly make money (almost like gambling). If you go with a pool, you'll never "hit it big" but you will get smaller, regular payouts
And by smaller payouts he means small. Let me give you an example. One coin can go out to 8 decimal places do you could get one millionth of a coin doing pooled mining, it is your choice but if you are using your GPU pooled mining could get you 1-2 coins per day max.