LUV2YODEL

We are working with an architects office that does all their work in Architectural desktop 2000 on Windows machines, our in house design staff is working in Vectorworks on Mac machines Problem is that we are unable to open their files. We have tried saving things as DXF files with limited success. These experiments enabled us to only be able to see what appeared to be one layer of the drawings. Can you help us? You will be saving us weeks of work if you can. Thanks in advance.