I'm afraid nobody here has any more of a clue than you do if you don't
provide sufficient information, such as:
Where are the files stored?
Where were they created - PC, Mac? By which version of Word?
If from another source, how were they transported?
How are you attempting to open them?
What - specifically - happens when you try?
Which version of OS X, type of Mac?
Also, the body content of your message indicates *.doc* but your Subject
line refers to *.dot* - What gives?
Regards |:>)
Bob Jones
[MVP] Office:Mac