How to tidy this string

From: zhong zeng <zhongzeng@gmail.com> Date: Thu, 27 Mar 2008 12:22:50 +0800 Message-ID: <99061a0f0803262122p56249959x56cf8682535a3295@mail.gmail.com> To: html-tidy@w3.org · This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 2 June 2009 18:21:38 GMT

HI,all
   I want to tidy this string to XML . the below this my example
  string: &reg;中文
 the tidy result is :
  <html>
<head>
<meta name="generator"
content="HTML Tidy for Windows (vers 21 March 2007), see www.w3.org" />
<title></title>
</head>
<body> 形?/body>
</html>

 and my tidy config is:
 tidy-mark: n
clean: y
doctype: auto
drop-empty-paras: y
join-classes: y
join-styles: y
logical-emphasis: y
merge-divs: y
output-xml: y
indent: auto
indent-spaces: 2
markup: y
wrap: 0
char-encoding: big5

Who can Help me ?
thanks !
Jezz