ODBC is a means of interfacing between programs/scripts (eg ASP scripts) and databases (eg MS Access).
A DSN (data source name) is basically an ODBC connection string which is stored in the Windows registry -- it means you can refer to a database connection in a bunch of ASP scripts (for example) using a name rather than a full connection string.
You set up a DSN using the Data Sources (ODBC) tool under Administrative Tools on your Start menu under Windows 2000. It's self-explanatory.
Chris at TDMWeb.com
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