StarDestroyer.Net BBS

I am an amateur 3d animator, but I need to know how to insert reference images into my files. I use 3d max, version 7. Can anyone help me?
Thank you in advance.

View menu --> Viewport Background (alt-B in max 6) --> image button --> select your image. If it picks the wrong viewport, select the right one from the list at the bottom of the window.

It works!