Independent columns through the whole document

Hello,


I want to have the following: a document that contains
two *independent* columns, where each of those columns
is going through the whole (multi-paged) document.

There reason for this is:
  I want to have one text as the original, layoutet in the first column.
  The second column is to be intended as a "comment-column" (or one  
also could use it as a
  column with the translation of the "original column".


How to achieve that?
This should be easy in lout?!?

Ciao,
    Oliver