If you have to import Microsoft Word files and map Word styles to InDesign styles, here’s some good news. Although the option to save style mappings as presets was first offered in InDesign CS3, it didn’t work in CS4. The preset name was saved—but it was empty!
Now, the just-released 6.0.4 update fixes this shortfall, as well as some other issues. The PDF of the release notes can be found here.