How do you attach an ECW file onto the AutoCAD

[aml78363]

Hi,
How do you attch an aerial view that is saved as an ECW file onto the autocad which is a .dwg format.
I am currently drawing a line plan for the aerial view of a building and then i need to overlap autocad onto the aerial view(a GIS file saved as an .ECW file format) such that when i open the drawing in the autocad i need to see both the aerial and the autocad together in the same file.
Also,I need to save the work on the cd but when i save the file on the cd and then open the file in autocad i can see just the autocad and not the aerial but i need to have both the aerial and autocad to open together when i open the file.
So can anyone tell me how do i attach both the files onto one and also save it on the cd and when i open the cd in autocad i need to see both the drawings in that file.

Thanks,
Aml

 

[borgunit]

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