So, you have done part 1 of the boxmodelling on this site and you are wondering if you can see the meshsmooth results before you apply the meshsmooth modifier. Well there is a way so open up Max and create a box 80by 80 by 20 and with 6 segments for length width and height like in fig 1.a. Now right click and convert to edible poly.
Go into your modifier list and select meshsmooth using the values like in fig 1.b. Make sure you select your render values or it will not work right.
ok so far? Now then, what we do at this point is select the edible poly in the stack like in fig 2.a. You will notice that your mesh goes back to its original form. This is because we are going to edit it before the meshsmooth modifier. Now, click, show end result on-off toggle which is at the bottom of fig 2.a, second from the left.
We are still in edible poly, so we can simply click polygon like in fig 2.b. And you will notice a grid form on your mesh like in fig 2.c. This is the original polys on your mesh and you can extrude or chamfer using these, but the result will be already meshsmoothed as you are doing so creating a realtime meshsmooth so you can see the results as you are boxmodelling! fig 3.a shows the results of just a few extrudes.
More 3D Graphics: 
