DefaultHttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://caro-os.de/idesk/index.php");

    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
    nameValuePairs.add(new BasicNameValuePair("login_act", "niklas.riecken"));
    nameValuePairs.add(new BasicNameValuePair("login_pwd", "passwort"));
    try {
		httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
	} catch (UnsupportedEncodingException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}

    try {
		HttpResponse response = httpclient.execute(httppost);
	} catch (ClientProtocolException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	} catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}

    Cookie cookie = null;

    List<Cookie> cookies = httpclient.getCookieStore().getCookies();
    for (int i = 0; i < cookies.size(); i++) {
       cookie = cookies.get(i);
    }

    Cookie sessionCookie = cookie;
    CookieSyncManager.createInstance(this);
    CookieManager cookieManager = CookieManager.getInstance();
    if (sessionCookie != null) {
        cookieManager.removeSessionCookie();
        String cookieString = sessionCookie.getName() + "=" + sessionCookie.getValue() + "; domain=" + sessionCookie.getDomain();
        cookieManager.setCookie("caro-os.de", cookieString);
        CookieSyncManager.getInstance().sync();
    }
   }