Since the dudez website didn't have a download button, here is a program to download the stuff for you...

DUDEZDownloader.java

// Basically I couldn't find the download link on the dudez page
// So here is my own downloader

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class DUDEZDownloader {
	
	static String getData(InputStream is) throws IOException {
		InputStreamReader r = new InputStreamReader(is);
		StringBuilder sb = new StringBuilder();
		
		int c = 0;
		while(true) {
			c = r.read();
			if(c == -1) {
				break;
			}
			sb.append((char)c);
		}
		
		return sb.toString();
	}
	
	static void downloadPage(String location) throws IOException {
		URL url = new URL(location);
		URLConnection con = url.openConnection();
		String get = getData(con.getInputStream());
		
		String path = location.substring("https://dudez.docking.org/".length());
		if(get.startsWith("<!DOCTYPE")) {
			// first, ensure our directories are created!
			File dir = new File(path);
			if(!dir.exists())
				dir.mkdirs();
			
			// Then, iterate through the tree to get what we want
			Pattern pattern = Pattern.compile("<a href=\"(.*?)\">(.*?)</a>");
			Matcher matcher = pattern.matcher(get);
			
			while(matcher.find()) {
				String link = matcher.group();
				int end = link.indexOf("\">");
				String suburl = link.substring("<a href=".length() + 1, end);
				
				if(link.contains("Parent Directory") || link.contains("?")) {
					//System.out.println("Skipping " + suburl);
					continue;
				} else {
					System.out.println("Downloading " + suburl);
					downloadPage(location + suburl);
				}
			}
			
			System.out.println("Folder download for " + path + " complete");
		} else {
			BufferedWriter bw = new BufferedWriter(new FileWriter(path));
			bw.write(get);
			bw.close();
		}
		
	}
	
	public static void main(String[] args) throws Exception {
		downloadPage("https://dudez.docking.org/DOCKING_GRIDS_AND_POSES/DRD4/");
	}
	
}
/*

*/