Thank you but seems that I was not understandable. I don't want to add another Tab in the Tab line. I know how to do it. What I want is to add 2 normal button in the header and align them bottom-right. If it was a cell in a table I had to write align="right" valign="bottom". But using divs must be something like div class="float:container" etc etc ....
Maria
I did some quick tinkering, copying a button code out of showthread template and edited my header to display a button ;).
Example of header template:
<div class="above_body"> <!-- closing tag is in template navbar -->
<div id="header" class="floatcontainer doc_header">
<div><a name="top" href="{vb:raw vboptions.forumhome}.php{vb:raw session.sessionurl_q}" class="logo-image"><img src="{vb:stylevar titleimage}" alt="{vb:rawphrase x_powered_by_vbulletin, {vb:raw vboptions.bbtitle}}" /></a></div>
<div style="float:right;margin-right:10px;margin-top:20px;">
<a href="newreply.php?{vb:raw session.sessionurl}p={vb:raw LASTPOSTID}&noquote=1"
class="newcontent_textcontrol" id="newreplylink_top"><vb:if condition="$show['closethread']"><span>+</span> {vb:rawphrase reply_to_thread}<vb:else />{vb:rawphrase closed_thread}</vb:if></a>
<img style="display:none" id="progress_newreplylink_top" src="{vb:stylevar imgdir_misc}/progress.gif" alt="" />
</div>
<div id="toplinks" class="toplinks">
Image example:
https://vborg.vbsupport.ru/attachment.php?attachmentid=125172&d=1294044553
You can see the code I used in blue, it's a rough draft so now simply edit the code to show your buttons :D. Let me know how it goes, you can also get rid of style="yadda yadda" in the <div and use class="yadda yadda" by adding in your own css definitions to additional.css template :D.