If you have text files defining component information you wish to use in PDC (the Pulsonix Database Connection), you can use an additional file to configure how the data in those text files is made available to PDC by the ODBC text driver.
The way you do this is to create a file called Schema.ini in the same folder as the text files. The ODBC driver reads this file and uses it to control things such as the 'type' of fields (string, number, and so on).
Note that this page says the only available choices for CharacterSet are ANSI and OEM, but all current versions of Windows should support UNICODE as a character set as well, this is just another of those nice Microsoft undocumented features!