Just as Bjorn says:
  1. You need to remember to include the path, otherwise the file will be local.
  2. You don't need to strip the suffix.
  3. CALL is a command, not a function.

Here is your code slightly modified - it should get you closer.
 Code:
RUN_ENABLED("C:\Docume~1\iso\Desktop\KIX\Development\enabled")
  
Function RUN_ENABLED($path)
  Dim $runenabled
  $runenabled = Dir("$path\*.*")
  While Not @ERROR
    If $runenabled <> "." AND $runenabled <> ".."
      Call $path+"\"+$runenabled
    EndIf
    $runenabled = Dir()
  Loop
EndFunction