With this feature...
Do this...
max 
min color Z
With USER MIN MAX selected in the color method list, type the maximum and minimum Z-values that will be represented by the colors in the color spectrum on the left. To change the color associated with a max or min value, double-click the color and select the desired color from the popup color palette.
thin thick contour step
Type the Z-value increments at which thin and thick contour steps appear.
Flip
Click to transpose the min and max colors.
stock palette
Select from pre-defined color palettes. The colors in these palettes can't be changed.
color method
Select whether the min and max colors are automatically associated with the smallest and largest Z-values on the map or with values you type.
smoothing amount
Drag to increase or reduce contour line smoothing.
color label freq., inch
Double-click to select a color in which to display contours and type the linear distance between contour labels.
show overlay contours
If show overlay
contours is selected, click overlays
lookup to display the Overlay
Map Lookup dialog box and select the contour lines to overlay
on the map.