#/usr/bin/perl -w
use strict;
use DBI;

my $DSN = 'dbi:ODBC:driver={SQL Server};server={myserver};database={my
+db}';
my $dbh = DBI->connect($DSN, undef, undef) or die "$DBI::errstr\n";

my $gSQLCmd = 'SELECT col1, col2, col3 FROM mytable';
my $gSQLHandle = $dbh->prepare
  (
    $gSQLCmd
  ) || die 'Error with SQL statement ['.$DBI::errstr.' - '.$DBI::err.'
+]';

$gSQLHandle->execute() || die 'Error with SQL statement ['.$DBI::errst
+r.' - '.$DBI::err.']';

while (my @gFields = $gSQLHandle->fetchrow_array)
{
  print 'Row: ',$gFields[0],"\t",$gFields[1],"\t",$gFields[2],"\n";
}

$dbh->disconnect;
[download]

The code will work a little better if you replace myserver, mydb, and mytable with ones from your actual system. *Smiles* Also, please note that this code connects to the database without a userid or password -- it is using my domain account for authorization.

Update I forgot to give credit where credit is due -- my code is based on the information from DBD::ODBC Connecting without DSN from Win32 by sparkyichi