Although I forget the website's URL, I know for a fact there are websites deticated to helping people make WC3 maps. The one website I saw had the basic layout that SEN has. If I can find the link to it, then I will post it.
ADDITION:
Ok, so I couldn't find what I was looking for. But, I did find this:
http://war3forum.worldofwar.net/index.php[right][snapback]160562[/snapback][/right]
The onle reason I am playin WC3 is because my SC won't work anymore. I need to fix my comp, but once I do i'll be back makin maps for SC.