editing raster image with different pixel size

[gisdude]

Hi all.
I am using photoshop to crop my images then bring them into Autocad map3d.

But when I bring them into AutoCad map, I want to make the white background transparent, so I can see the aerial photo behind the cropped photo.

Is there a way to edit the cropped image? I have been playing around with it for a while now, bu no go.

TIA

win2k
autocadmap3d 2005
LDT 2005

[Glenn Pope]

If you highlight the image and go into the properties palette you should see an option to select a color to be transparent.