How do I put this code?

[MaR?]

Hello, This is a simple question... I have this code with his css code working great:

PHP Code:

.tcat_alt {
 background:transparent url(images/styles/Arena/style/tcatBG.gif) repeat-x top left;
 height:44px;
}
.tcat_alt a, .tcat_alt a:visited,.tcat_alt:hover {
 color:#837e6e;
}
.tcat_alt_right {
 background: transparent url(images/styles/Arena/style/tcatRight.gif) no-repeat top right;
 height: 44px;
}
.tcat_alt_title {
 background: transparent url(images/styles/Arena/style/tcatLeft.gif) no-repeat top left;
 float: left;
 height:30px;
 text-align: left;
 padding: 14px 0 0 15px;
 font-size:10pt;
 font-weight:700;
 color:#837e6e; 
} 

(Rounded coners)

Where or HOW do I have to put on forumhome_forumbit_level1_nopost

PHP Code:

<if condition="!$show['collapsable_forums']">
<tbody>
</if>
 <tr>
  <td class="tcat" colspan="<if condition="$vboptions[showmoderatorcolumn]">6<else />5</if>">
   <if condition="$childforumbits">
   <a style="float:$stylevar[right]" href="#top" onclick="return toggle_collapse('forumbit_$forumid')"><img id="collapseimg_forumbit_$forumid" src="$stylevar[imgdir_button]/collapse_tcat{$collapseimg_forumid}.gif" alt="" border="0" /></a>
   </if>
   <a href="forumdisplay.php?$session[sessionurl]f=$forum[forumid]">$forum[title]</a>
   <if condition="$show['forumdescription']"><div class="smallfont">$forum[description]</div></if>
   <if condition="$show['subforums']"><div class="smallfont"><strong>$vbphrase[subforums]</strong>: $forum[subforums]</div></if>
  </td>
 </tr>
<if condition="!$show['collapsable_forums']">
</tbody>
</if>
<if condition="$childforumbits">
<if condition="!$show['collapsable_forums']">
<tbody id="collapseobj_forumbit_$forumid" style="{$collapseobj_forumid}">
</if>
$childforumbits
<if condition="!$show['collapsable_forums']">
</tbody>
</if>
</if> 

Thanks!