BFME2 does not have a toolbox for alternate mouse setup, but you can still use it if you edit in an ini file.
Make sure you open ini files with notepad or other standard text editor.
With alternative mouse setup, you use left click for select and attack and right click to cancel.
The file is located in: C:\Documents and Settings\#USER#\Application Data\My Battle for Middle Earth Files 2
Click on "options.ini" and add this line:
AlternateMouseSetup = yes
The sentences are in alphabetical order, so normally you should add it on line 2.
Note: AlternateMouseSetup = Yes is wrong, so is alternatemousesetup = yes. It must be exactly like it is written.
usually when i play with this alternate mouse setup, i can click and tell a unit where to go like in c&c, but when you need to offclick, you just press any one of the numeric keys that aren't assined a team.