This method is a lot of work and I don´t think it will look very good.
You will get a wonderfull z-buffer-problem, all edges will dance around
in a distance. To solve it, you have to change clip_near to a higher value
so you can look threw the walls next to you.

But anyway, here a some remarks to make it a little bit easier:
3)do not export to 3ds, export to md2!
your model will not be rotated and keeps its size.
6)save it as milkshape.asc and be shure to scale it 1(!!!)when you
import it into med.

That´s the best way for exporting and importing models without loosing
orientation, zeropoint or scaling.

I agree with Christian, better work it out with your textures...