Craig,

If you have a licensed copy of the Tivoli Data Protection for MS Exchange -
then just install over your trial install to the same directory and folder
and the license component will be installed.  It will only replace the
files that are newer or that are needed.   It won't mess with your options
files and configuration information.

regards, Lou
  ---------------------
Lou D. Heavenrich
Tivoli Data Protection Team
IBM, Endicott