rounded corners – help

well i have this code, i want to have rounded corners around all the cells .. not each of the cells, i know it can be done using css and maybe float and some positioning but im not sure.

[code]<tr>
<td class=”cellthree” align=”center” valign=”top”><a href=”<sys:gate>?getforum={$forum[‘forum_id’]}” title=”woot!~”>{$marker}</a></td>
<td class=”cellone”><h4><a href=”<sys:gate>?getforum={$forum[‘forum_id’]}” title=””>{$forum[‘forum_name’]}</a></h4><p>{$forum[‘forum_description’]}{$mods}{$subs}</p></td>
<td class=”celltwo” align=”center”><strong>{$forum[‘forum_topics’]}</strong></td>
<td class=”celltwo” align=”center”>{$forum[‘forum_posts’]}</td>
<td class=”celllast” nowrap=”nowrap”>{$last_post}</td>
</tr>[/code]

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