Background image in GMAX

Hey guys, I'm just wondering if it is possible to put a background image in AFCAD. I thought I remembered seeing the option once but I can't find it now :-?. I've found the proper layout of an airport I'm upgrading but it's hard to scale the aprons and stuff correctly when you're switching between windows
. Anybody know if this is possible?
If not, would it be possible to make the windows transparent or something?
Thanks in advance
.
- Kevin

If not, would it be possible to make the windows transparent or something?
Thanks in advance

- Kevin
