Hi Everyone,
The very latest dev build of L3DT Pro includes a new plugin to create SMD files for Spring maps. To use this plugin, select the 'Extensions->L3DTio_Spring->Edit SMD settings' menu option to create/edit the SMD settings, and the 'Extensions->L3DTio_Spring->Export SMF/SMT/SMD' menu option to write the SMD (along with the SMF and SMT files).
You can get an idea of the look and feel of the plugin UI from this page of the user-guide.
If you would like to try this plugin, please download the latest dev build of L3DT Pro. I have tested this plugin with the latest version of Spring (0.75b2) and everything seems OK, but YMMV. Please let me know if you find any problems, or would like to suggest a change.
Cheerio,
Aaron.