[2008] Creating a finer Pen

[user name]

I am working on a part of an application that requires a graph which i have done using a picturebox and CreateGraphics.DrawLine, it accepts scores which there could be between 20 and 45 scores to show on the graph across the width of the picturebox. My question is, can we draw a line with a finer pen so the diagonal lines dont look to jagged (see pictures).

20 scores is probably ok but when it accepts 45 it looks a bit dodgy.