hi everyone - can anyone help me with this question? i created my image i wanted, and set up lighting nodes etc etc.. and its a basic image with a model and a plain background. i set up render settings at final (automatic settings) and the size was 1000 pixels by 800 pixels.  it was still rendering 30 hours later.......... and only on 3 quaters rendered. is there anything i can do to speed up renders?

my computer is an    intel core duo 2 ,   2.13 GHz  ,   2GB ram ,  radeon x1600 graphics card.