Delphi3 and ODBC Driver MS 3.5

Can you help me for used Microsoft ODBC driver v3.5?

For example witth the text driver I have the following problem:

With a table object if I use an alias defined on this ODBC driver, I can
obtain list of the file in property Tablename, for example bs.txt,

If I select one of these file I obtain an error : bad table name

If I enter the name without extension .txt, for example "bsa" I obtain
error message return by the driver: "The Microsoft Jet database engine
cannot open the file 'bsa.txt'. It is already opened exclusively by
user, or you need permission to view its data."

With the same ODBC Driver I have no difficulty for access these text files
with other software such as : MSQuery, Crystal Reports ....