You can't use the programs, true. But the dem-files should be usable. I am on Mac too and tried out some dems that i have downloaded from the Internet (can't remember from where). I looked at geocomm.com but was too stupid to find the free downloads. Why must that all be so difficult? However, not a big problem for me, i will survive without dems.

One day your ship comes in - but you're at the airport.