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The ODBC Data Source Administrator within
Windows lets you create DSNs, check driver installation and
configure ODBC systems such as tracing (used for debugging) and
connection pooling.
Different editions and versions of Windows store the
ODBC Data Source Administrator in different
locations depending on the version of Windows that you are
using.
To open the ODBC Data Source Administrator in
Windows Server 2003:
To identify whether a DSN was created using the 32-bit or the
64-bit driver, include the driver being used within the DSN
identifier. This will help you to identify the right DSN to
use with applications such as Excel that are only compatible
with the 32-bit driver. For example, you might add
Using32bitCODBC to the DSN identifier for
the 32-bit interface and Using64bitCODBC
for those using the 64-bit Connector/ODBC driver.
On the Start menu, choose
Administrative Tools, and then click
Data Sources (ODBC).
To open the ODBC Data Source Administrator in
Windows 2000 Server or Windows 2000 Professional:
On the Start menu, choose
Settings, and then click Control
Panel.
In Control Panel, click
Administrative Tools.
In Administrative Tools, click
Data Sources (ODBC).
To open the ODBC Data Source Administrator on
Windows XP:
On the Start menu, click Control
Panel.
In the Control Panel when in
Category View click Performance
and Maintenance and then click
Administrative Tools.. If you are viewing
the Control Panel in Classic
View, click Administrative
Tools.
In Administrative Tools, click
Data Sources (ODBC).
Irrespective of your Windows version, you should be presented
the ODBC Data Source Administrator window:
Within Windows XP, you can add the Administrative
Tools folder to your Start menu
to make it easier to locate the ODBC Data Source Administrator.
To do this:
Right-click the Start menu.
Select Properties.
Click Customize....
Select the Advanced tab.
Within Start menu items, within the
System Administrative Tools section,
select Display on the All Programs menu.
Within both Windows Server 2003 and Windows XP, consider
permanently adding the ODBC Data Source
Administrator to your Start
menu. To do this, locate the Data Sources
(ODBC) icon using the methods shown, then right-click
on the icon and then choose Pin to Start
Menu.
The interfaces for the 3.51 and 5.x versions of the Connector/ODBC driver are different, although the fields and information that you need to enter remain the same.
To configure a DSN using Connector/ODBC 5.2, see Section 4.3.1, “Configuring a Connector/ODBC 5.x DSN on Windows”.

User Comments
The Advanced tab is not present in 5.1.
If you can't find the ODBC Data Sources in the menu and can't be bothered to enable the admin tools: just enter odbccp32.cpl on the commandline.
In Vista the command-line (Run) seems to be "ODBCAD32".
In Windows 7 Pro x64 with MS Access 2010 and MS Excel 2010, I had to use a Data Source Name (DSN) which did not have spaces in it. Otherwise I would receive the error: "Could not determine the driver name; could not lookup setup library.".
Additionally, I had to install the 32 bit ODBC Connector first, and then install the 64 bit ODBC Connector on top of the 32 bit Connector.
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