The Host Integration Server 2004 Data Access Tool (DAT) creates a copy of a data source name (DSN) when the DAT converts the DSN if the name already exists

When you convert a file data source name (DSN) to a system DSN in the Data Access Tool (DAT), the tool makes a copy of the data source if the name already exists as a System DSN. If you convert the File DSN a third time, DAT will add the characters "()". These characters are not valid in the Data Access Tool.

To work around this problem, rename the File DSN that you are converting to a name that does not exist as a System DSN.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Microsoft is researching this problem and will post more information in this article when the information becomes available.

Steps to reproduce the behavior

1.	Create a system DSN that is named Test.
2.	Create a file DSN that is named Test.
3.	Convert the file DSN to a system DSN, and then click Refresh.