Let me frist start off by saying it is easier to export a shp form the OE and use the .ac from that but if you want to create a project from scratch you can do the following. To Create object heirarchies in AC3d you'll need to be familar with a few controls :
The first one is the heirarchy view control located here:
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_heirview2.jpg)
The next control used is the 'select ' control:
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step6.jpg)
The select control has four options but you will only need the frist two(group and obejct select) to change object/group heirarchies and names.
The last control to be familar with is the name control down at the lower left hand conner..
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step3.jpg)
So as an example I created a simple box that uses the skidmark.bmp for texture that looks like the following:
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step1.jpg)
Now to create the object heirarchy for it I open the "heirarchy view" control. As you can see in the pic below it starts out with the group name world followed by a child object called 'box'. This is the default heirarchy ac3d assigns...
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_heirviewbeg.jpg)
I first begin by changing the name of my box obect to a name that is preferred and recommended in the AC3d.txt help file.
To do this go to the "select" control and make sure object selection is enabled..
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step2.jpg)
once that is enabled, select your object you wish to change the name to. AFter you have selected an object look at the "name" control down in the lower left. It should show you the current name of the object and will let you change the name...
so as you can see in the pic below my object is named box..
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step3.jpg)
I then change the name to str0..
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step4.jpg)
Once you renamed your new object, go back to the heirarchy view...
It should now look like this...
![](http://i56.photobucket.com/albums/g185/s0da72/ac3d_step5.jpg)