I think the plus holds a few extra tables in it's database, but else I think it's the same.

The tables in the plus version is also named only eqdkp, as in "eqdkp_members", which is the table you'll need to fetch the requested info.

Here's the sql dump of the structure of the table:
-- phpMyAdmin SQL Dump
-- version 2.11.8.1deb5+lenny1
-- http://www.phpmyadmin.net
--
-- Vert: xxxxxxxxxxxx
-- Generert den: 14. Okt, 2009 klokka 10:50 AM
-- Tjenerversjon: 5.0.41
-- PHP-Versjon: 5.2.6-1+lenny3

SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- Database: `xxxxxxxxxxxxx`
--

-- --------------------------------------------------------

--
-- Tabellstruktur for tabell `eqdkp_members`
--

CREATE TABLE IF NOT EXISTS `eqdkp_members` (
  `member_id` smallint(5) unsigned NOT NULL auto_increment,
  `member_name` varchar(30) NOT NULL,
  `member_earned` float(11,2) NOT NULL default '0.00',
  `member_spent` float(11,2) NOT NULL default '0.00',
  `member_adjustment` float(11,2) NOT NULL default '0.00',
  `member_status` enum('0','1') NOT NULL,
  `member_firstraid` int(11) NOT NULL default '0',
  `member_lastraid` int(11) NOT NULL default '0',
  `member_raidcount` int(11) NOT NULL default '0',
  `member_level` tinyint(2) default NULL,
  `member_race_id` smallint(3) unsigned NOT NULL default '0',
  `member_class_id` smallint(3) unsigned NOT NULL default '0',
  `member_rank_id` smallint(3) NOT NULL default '0',
  `member_xml` blob,
  PRIMARY KEY  (`member_id`),
  UNIQUE KEY `member_name` (`member_name`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=190 ;

To figure out current dkp we will need this calculation: (member_earned - member_spent + member_adjustment) as the table doesn't automaticly hold the current dkp. At least as far as I could tell.

Cheers for looking into this mate!