Thanks for your reply Zangman,I solved some things thanks to you. On the last point,hovewer,I do not have the part you desctibed.
Code
<table border="0" cellpadding="0" cellspacing="0" width="100%" height="402" style="background:url('/img/header-bg.jpg') top center no-repeat;">
<tr><td colspan="2" height="328" align="left" valign="top" id="logo"><h1>$SITE_NAME$</h1></td></tr>
<tr><td colspan="2" height="24" align="right" style="padding-right:46px; padding-top:12px; padding-bottom:4px;"><?if($SEARCH_FORM$)?>$SEARCH_FORM$<?endif?></td></tr>
<tr><td height="30" style="font-size:10px; padding-left:20px;" ><?if($USERS_ON$)?><?if($USER_LOGGED_IN$)?><!--<s5200>-->Logged in as<!--</s>--> <a href="$PERSONAL_PAGE_LINK$"><b>$USERNAME$</b></a> | <!--<s3167>-->Group<!--</s>--> "<u>$USER_GROUP$</u>"<?else?><!--<s5212>-->Welcome<!--</s>--> <b>$USERNAME$</b><?endif?><?endif?> <?if($RSS_LINK$)?>| <a href="$RSS_LINK$">RSS</a><?endif?></td><td style="padding-right:20px;font-size:10px;" align="right" id="headbutton"><a href="$HOME_PAGE_LINK$"><!--<s5176>-->Main<!--</s>--></a> <?if($MODULE_URL$)?>| <a href="$MODULE_URL$">$MODULE_NAME$</a><?endif?> <?if($USERS_ON$)?><?if($USER_LOGGED_IN$)?> | <a href="$PERSONAL_PAGE_LINK$"><!--<s5214>-->My profile<!--</s>--></a><?else?> | <a href="$REGISTER_LINK$"><!--<s3089>-->Registration<!--</s>--></a><?endif?><?endif?> <?if($USERS_ON$)?><?if($USER_LOGGED_IN$)?> | <a href="$LOGOUT_LINK$"><!--<s5164>-->Log out<!--</s>--></a><?else?> | <a href="$LOGIN_LINK$"><!--<s3087>-->Login<!--</s>--></a><?endif?><?endif?></td></tr>
</table>
And for some reason, I cannot leave a blank field of that sign...Added (09.01.2012, 23:03)
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Edit: My mistake,I didnt notice "<h1>$SITE_NAME$</h1></td></tr>". Thanks for your help