1. Enclose your code in <code></code>
2. Throw in some error handling when you create your connection. (I snipped this from the FAQ:)

$DSN = "My DSN";
if (!($db = new Win32::ODBC($DSN))){
    print "Error connecting to $DSN\n";
    print "Error: " . Win32::ODBC::Error() . "\n";
    exit;
}
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3. Tell us what error you're getting.
It's hard to troubleshoot without an error. Like jcwren suggested, check your dsn.
Finally, Win32::ODBC usually isn't the best way to access databases under Win32. The Win32::OLE module lets you use ADO, this is really the optimal database interface on Win32. ADO will really come in handy if a VB programmer has to maintain your code. (Don't laugh, I've had to bring VB guys up to speed on my code. ADO was the only part they understood.)
--Shoeboy
perl -e "do {kill $java, $ada, $cobol, $pascal, $csh;} until die 'Just another perl hacker';"