Fast question how could i modify my login page of Netxms so i can have text and button below the logo, should i modify the nxmc.properties and how ?

Basically i want to add this to the login page:

<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML>
  <HEAD>
      <TITLE>
        Referrence to NetXMSDownloadPage
      </TITLE>
  </HEAD>
<BODY>
<form action="https://www.netxms.org/download/">
    <input type="submit" value="NetXMSDownloadPage" />
</form>
  <P>To download the latest version use the button above</P>
</BODY>
</HTML>