Dose Response Curves

Hello all,

Just a quick question about running stats in graph pad 6 on two dose response curves. I have to find out if at each dose, there is significance between the two curves AT THAT DOSE. I have no idea how to do this.

I attach a picture where I just show the one curve is significantly different from the other... but I have to indicate AT EACH DOSE if there is significance. How do I do this in graph pad?

Can anyone out there help. I am scared of stats :( haha.

Thanks in advance.