i would recommend the SCMdraft program which can be found here:
http://www.staredit.net/index.php?download=4207thats why i use to make stacked fast maps and i love it. you will have to change some options to allow minerals to be next to the base and stuff, but its easy.
make sure you compress and protect your map after your done with uberation, which can be found here:
http://www.staredit.net/index.php?download=2596and as always if you need any help, feel free to post and ask anyone here (after checking the stickies and searching first

)
-cameron86