Look at the files in ..\Softrak\ODBCv2 on your machine and see what is installed at the site.

What does "(8) Error attempting to open file: AL90DGLO" mean in your application?

Is it possible you are not looking at the correct data folder?

How is the "connection" being made in MSQuery from Excel. If the client has not purchased/registered Adagio ODBC then they will not be able to create a DSN or connect to the data.