use strict;
use DBI;

$| =1;

my @sites;
#This below can be changed to 'dbi:ODBC:<name>'
#provided you have DBI::ODBC installed
#I'm testing both, and have both installed
#They "feel" fairly interchangable
my $dbh = DBI->connect('dbi:ADO:Name', undef, undef, {PrintError => 1, RaiseError => 1});

#The two lines below are for use with DBI::ODBC 
#with BLOB, aka MEMO fields with large amounts of data. 
#Look in the docs for the modules for more on them
#$dbh->{LongReadLen} = 65534;
#$dbh->{LongTruncOk} = 1;
my $sth = $dbh->prepare('SELECT * FROM tbldata');
$sth->execute;

#dump_results is very good for testing, 
#and even for simple apps -- you don't need to
#loop the results, just print out $results
#my $results = DBI::dump_results($sth);

#One of the nice things about DBI is the wide
#variety in gives you in retrieving data
while (my $results = $sth->fetchrow_hashref) {
	push @sites, $results;
}

====================================================
Now for the Win32::ODBC version -- less commentary, as it's a little less flexiable, but more obvious (IMHO):
use Win32::ODBC;

my @rows;

my $DSN = "Name";

if (!($db = new Win32::ODBC($DSN))){
	print "error connecting to $DSN\n";
	print "error: " . Win32::ODBC::Error() . "\n";
	exit;
}

die qq(SQL failed: ), $db->Error(), qq(\n) if ($db->Sql("SELECT * FROM tbldata"));

while ($db->FetchRow()) {
	my %data = $db->DataHash();
	push @rows, {%data};
}