Ok i have well not hi - end(x64,4 gb RAM, Intel Core2 Quad CPU 2.40*2, video card is Nvidia 8800 gts.) computer and only it.
Max speed of mining is 11 Mh/s, using UFASOFT CPU Miner (4 thread cpu is on, gpu is on)
I spend well near 80 hours of non stop minig in proportion mode and all what i get is 0.1 Bitcoin

What i doing wrong?