Hi Yurji...
I change the code near the top of the head.tpl file: the width and height and kept the filename the same as default xlogo.gif to make it easier...
<table cellpadding="0" cellspacing="0" width="100%">
<tr>
<td class="HeadLogo"><a href="{$http_location}/"><img src="{$ImagesDir}/xlogo.gif" width="244" height="67" alt="" /></a></td>
<td class="HeadRightBox">
{if $usertype eq "C"}
{include file="customer/top_menu.tpl"}
{/if}
</td>
</tr>
</table>