If you get this error when you try to use UserTools to edit setenv.bat:
--------------------------- Error --------------------------- An error occured trying to save file 'C:\Program Files\Autodesk\Softimage 2011\Application\bin\Setenv.bat' ! --------------------------- OK ---------------------------
then you have to run UserTools with elevated privileges.
Right-click the UserTools shortcut and click Run as Administrator.
-or-
Right-click UserTools, click Properties, go to the Compatability tab, and under Privilege Level, select the “Run this program as an administrator” check box.
eX-SI 