Yes to all three questions. Still couldn't open without gibberish so I called Adobe in India. Found out .mdi will not open in Adobe 7 and 7 will open only pdf. I was happy to find that out. Thought I was doing something wrong.
I also found out Adobe 9 has not been launched yet he told me. I don't think I can get 8 since I have Win 2000 SP2 only. I assume this is the best I can do. He said; "I can't open .tiff either with 7". Thanks for the push
I needed to get over the hump.