2
1.) go to the following site:
http://localhost/modules/system/admin.php?fct=preferences&op=show&confcat_id=1
then change the fith setting to the module you want to show up as default
2.) go to the following site:
http://localhost/modules/system/admin.php?fct=modulesadmin
there you can set the order and activity of the modules you've got installed
3.) don't know what u mean?!? normally you don't have to change the theme.html. you can change your slogan here:
http://localhost/modules/system/admin.php?fct=preferences&op=show&confcat_id=1
http://localhost/modules/system/admin.php?fct=preferences&op=show&confcat_id=3
(first link, second settings)