I have just started with bitcoins and bitcoin mining.  I have set up GUI miner on 2 systems, one with dual GeForce 9600's and one with a GeForce 350m  I have both machines connected to deepbit, and running CUDA miners.  I am getting about 14-15 Mhash/s.  But I have seen screenshots of people getting 10X that.  Is my machine really that "Crapy" for mining?  Or are there some settings that need to be adjusted, and what are they?