Ok sry for the double post...
Finally found it. Had to use my old bat radar to see it.
Under the Help Menu
Select 'Check DarkBASIC modules...'
It will pop up a window with installed modules and there will be an activate button. Press that to activate with your email/activation code.
Selecting 'Check DarkBASIC modules...' isn't really all that obvious to me to register stuff.
Thanks baxslash for driving me to find it!
Edit: arg... ofcoarse now I found out Lee forced spaces on tabs. I get a bunch of squares where I had tabs to indent text. Oh well, back to 'editorU73.exe'.