that was a bad answer for 3.
3. get a UVMAPPER then import a (preferably .obj file because .obj keeps proportions when UVMAP) you should see a load of white lines and points, then go to edit and select all.
Now the points should be red(selected).
then go to tools and then UVMAPPING,
and hit the kind of map you want. (play around and see which one best fits your model)
then export the model to .3ds or .obj
DONT close it yet, go to file>UVMAP>save, and save as a .bmp/.jpg
but keep the image proportional, like 500x500 or 1000x1000 (or it'll be stretched/deformed.
Then go to an image editor and hand texture the image or find an image online and scale it to the section of the image you want to texture
Use Lithunwrap. its free.
and if you dont have an image editing software, use gimp. it's free too.