Cannot Read Varchar(max)

Hi all,
considering the new varchar(max) type I have changed some text columns in 
some tables.
The problem is the "SQL Native Client 2005.90.1399.00" odbc driver does
not 
return any value for this varchar(max) column.
If I use the old odbc driver SQL Server 2000.85.117.00 it works fine.

Any idea why this is not working with the 2005 driver?

Thanks

_______________
Fabio F, Fullin
cel: 15-5479-1821