i've made this in my board with a template modifikation in the FORUMDISPLAY template
Code:
<if condition="$forumid==7">
<table class="tborder" width="100%">
<tr><td class="thead">Party Kalender</td></tr>
<tr class="alt1"><td>Hier nur <b>fixe</b> Termine reinschreiben.<br><br>Und bitte <u>nicht</u> nach Infos fragn in den Threads</td></tr><tr class="alt2"><td></td></tr>
</table>
</if>
<if condition="$forumid==15">
<table class="tborder" width="100%">
<tr class="alt1" align="center"><td>
....></td></tr></table></if>
<if condition="$forumid==33">
<table class="tborder" width="100%">
<tr class="alt1"><td>....!</td></tr><tr class="alt2"><td></td></tr>
</table>
</if>