Hi Nicolas, you mean you want to select the objects that were just generated from the result of an array command?

You can get that done by setting up a shortcut key with the script on it from here:
http://kyticka.webzdarma.cz/3d/moi/#SelectLastCommandCreated

Paste in that script for "SelectLastCommandCreated" into the command part of the shortcut key and then when you push that key the new objects that were generated by the last executed command will become selected.

That works with the output of any command, and after you have done an array it will select the objects that the array just created.

There are also a variety of other selection scripts that you can find there: http://kyticka.webzdarma.cz/3d/moi/ , and also see this previous post for some links to other selection techniques the different options with using the selection window mechanism: http://moi3d.com/forum/index.php?webtag=MOI&msg=5118.10

- Michael