Tiinusen,

If you have not yet done so get George Pirvu's Lite C workshop.

Workshop 8 shows what you need to do to run a level from Lite C. Copy this script file and change the level name to the level you have or are going to build. Save your script.

Once your level is built go to File menu and select Map Properties.
Click the Choose Script button and find your script from above and select it.

Your map now has a script.

This is obviously very brief. Read the rest of the workshops and I think you will see all you need to get started playing with Lite C and WED.

Marcus