Hi qibentie, there is a moi.ini setting that may help you - go to Options > General and push the "Edit .ini file" button.

Find this section:


[NURBS Import]
RotateYUpToZUp=n


Switch that to say =y and then the IGES import into MoI will automatically be rotated.


Also a different way than that is to use the Transform > Orient > View to view which can quickly rotate things by 90 degrees between 2 views. To do it that way, select all your objects and run the command, then inside the Front view for the first pick, and click inside the Top view for the second pick and things will get rotated.


- Michael