You might find this Link helpful!
http://office.microsoft.com/en-au/word/HA010703331033.aspx?pid=CL100636481033PS. After Thought: "to format your text to "full Column with in Word", go to
File>>Print Preview>>if your Column or Columns are not to your liking, click on Format in your Menu Bar on top, (while in Print Preview)>>click on Columns>>in the Columns Command Box you are able to change your Column Size or Column Numbers, or for the Whole Document or part Document etc.