title: Access to the path 'C:\Windows\System32\ is denied
body: <p>i wrote a website for someone and want to disable it after two mothns.<br>
  (because he should pay for it after two months, if not i should blow it up)<br>
  so, i called a DateTime WebService from my web site for getting DateTime.Now!<br>
  i should keep web site start time some where in his server and i want to write a text file in C:\Windows\System32.<br>
  but when i tried to write a text file in this path, i got the error below :  </p>
  
  <pre><code>Access to the path 'C:\Windows\System32\ is denied.
  </code></pre>
  
  <p>at this time i have remote access to his server and can change permissions.<br>
  but if he change his server, he will see that error and can find that file and edit it easily.<br>
  would you please learn me a way for fix that error or another way for saving web site start time!(mean where?)<br>
  database is not a good idea, because he has access to his database.<br>
  i can write that file on c drive and change it's attributes (hidden and system), but he can find this file easily.  </p>
  
  <p>would be appreciate for some help</p>