drawing curved line,plotting skin friction lines
 

Hello. I'm using Fluent 6.2. I'm trying to draw a line on the blade. I actually wanted to draw a curved line but in the function panel for creating line, only straight line can be drawn. May i know how to draw a curved line on a wall surface (which is curved)? I need to do that as i want to do a XY plot of the static pressure along that curved line on the blade.

I'm also trying to plot skin friction line on wall surfaces. In the function panel for plotting pathlines, i can only obtain the pathline but not the skin friction lines on wall surfaces. How do I do that in Fluent???

Regards