1) Cell Shading With MilkShape
This is to show you how you can obtain a black outline on your models without using pixel shaders. This is NOT a toon shading tutorial.
1st you need a model. This wonder full sphere will do fine for this demonstration.
Now next you want to duplicate this model which can be done from the menu or by hitting Ctrl-D
Then what you want to do is use the fatboy operator found here:
you can use the default settings which should look like what you see above. After that you model should have a Shell like this one here
Now what you want to do is invert the faces.. this is done by using the Reverse Vertex Order funtion.
now it is inverted and you can now turn off your back faces by right clicking and getting this menu
having Draw backfaces unchecked alows you to see your handy work. Now this is not all you should now add a new material
so hit the 'New' button, then select the 'Diffuse' property.. it should give you the colour Picker. Select black. Then hit 'Assign'.
Now you are done and should have a nice black outline.