MI: Gradient/slope shading

[General]

Hi,   I have a client who wants his elevation data contoured (easy) and then shaded by gradient.  He needs to highlight the areas too steep for the planting of grapevines.  I could use the relief shading to give a general idea, but was hoping for something a little more qualitative.  I'm running MI 6.0.  Any suggestions?   TIA   Michelle Smith Frontier Mapping Pty Ltd Australia