From
that tutorial thing that you read:
10. How to use DragonSP
After you've run Dragon, you may notice it tells you to run DragonSP to freeze statics. That's how you do it.
When run, DragonSP will need the paths to your statics. (Use a copy of them just in case)
On the left side are all the types of statics that you can include. This list is a set of scripts that Dragon generates based on the last map you created with it. Select the types you want to include either with the mouse or the buttons underneath the list (don't worry about the search button). For DragonSP to work, you must select at least one scp file. Pick both Waterx2.scp and 2xWater.scp to include the coastlines. Other types should be obvious. Hit start. At one point it will ask to "Clear Current Statics?" Answer Yes. This will get rid of all the towns, forests, etc that are in the static files (staidx0.mul and statics0.mul). It will then put in the statics that you need based on the map. That's it really. If you don't answer yes to the "Clear Statics" question, it will leave the current statics in the file and add the new stuff in. This is useful for when you do the coastlines on the first run, and then you want to do other statics on a second run (forest, grass, desert, etc).
DragonSP only freezes coastlines, trees rocks, etc that are generated by the scripts that Dragon creates when converting the map. To freeze houses and buildings, you have to use a program that will freeze stuff in the items.wsc file. WorldForge, MulTool, etc do this.