Bitmaps - can they be embeded in an autocad drawing

I need to load 4 various bitmaps into a standard title sheet for a client (they are logos for a controls company). When I have them loaded and "save as" a dwg drawing for AutoCad LT 2010, the bitmaps do not show up when my client opens the file at his end. We have tried to create the same path on our computers where the bitmaps came from but it still did not work.

Does anyone have any suggestions? Is there a bitmap trace in AutoCad Lt 2013?

Thanks for your time

AJ