I am trying to import some human models that I downloaded into Blender. The models were in 3DS and I used Crossroads to convert them to OBJ. When I import them you can only see the torso until you enter Edit mode, at which point you can see the vertices that make up the rest of the body. When I render, you can only see the torso. I read somewhere about entering edit mode, selecting all the vertices and removing doubles, but that didn’t seem to have any effect. Is there a way I can fix this?
Just re-size your model smaller .
What is resizing it smaller supposed to do? It doesn’t seem to make any difference? Little help?
have you tried making the faces by press F key
I tried making the faces and got the message: “ERROR: can’t make edge/face”.
You had that go into edit mode part right ^___^
Once in edit mode neutralise the texture index by deleting ALL the materials indices off your meshs.
Meshs converted are often composed of several parts. Crossroads differentiate them by generating indices. If you delete them they all take the blender default one and became all visible.
Jean-luc: your question, my answer
That sounds like a good idea, but how do you delete the material indicies in edit mode and I would assume I have to do a “select all” on the vertices before I do this. Sorry to drag this out, but this is a little new to me.
You could possibly keep the groups of your mesh.
-Select your mesh and the Tab to enter edit mode.
-Go the Edit menu (F9) and in the 3rd block from your left you’ll see an indice turn on automatically.
-Hit the select bouton and points refering to that indice will be highlighted.
-Go to the Material menu (F5) and add a material the usual way.
-Go back into the Edit Menu and IMPORTANT hit assign AND deselect.
Your new texture is going to fill the region represented by the indice selected.
You can repeat that for all the indices. To browse the indices just click with your mouse on the right side or the left side of the grey bar on top of the material indices block.
Leave Edit mode (Tab), put some lights and a camera and fire a F12 shot at your mesh, you’ll be surprised! 
To delete all the indices, in case you don’t need or want them, all you need is to have your mesh selected.
Go into edit menu (F9) and into the Material bloc (the third colonne from the left
-Hit the [Delete] until the grey bar on top indicate O Mat:O.
-Go back into the Material menu and assign a simple texture.
On render your mesh will be complete.
The trick here is that Blender has the indices in one hand and their colors but refuses to match them together for some obscure reasons that logic and mathematics cannot understand.
Jean-luc: your question, my answer