Hold on a second, are you talking about the main news box on the forum, or the stupid wee one at the top right of the page?
If so, in Themes\default\ndex.template.php - find this:
[code]<td width="262" style="padding-left: 5px;" valign="top">';
// Show a random news item? (or you could pick one from news_lines...)
if (!empty($settings['enable_news']))
echo '
<div class="headertitles" style="width: 260px;"><img src="', $settings['images_url'], '/blank.gif" height="12" alt="" /></div>
<div class="headerbodies" style="width: 260px; position: relative; background-image: url(', $settings['images_url'], '/box_bg.gif); margin-bottom: 8px;">
<img src="', $settings['images_url'], '/', $context['user']['language'], '/newsbox.gif" style="position: absolute; left: -1px; top: -16px;" alt="" />
<div style="height: 50px; overflow: auto; padding: 5px;" class="smalltext">', $context['random_news_line'], '</div>
</div>';
// The "key stats" box.
echo '
<div class="headertitles" style="width: 260px;"><img src="', $settings['images_url'], '/blank.gif" height="12" alt="" /></div>
<div class="headerbodies" style="width: 260px; position: relative; background-image: url(', $settings['images_url'], '/box_bg.gif);">
<img src="', $settings['images_url'], '/', $context['user']['language'], '/keystats.gif" style="position: absolute; left: -1px; top: -16px;" alt="" />
<div style="height: 35px; padding: 5px;" class="smalltext">
<b>', $modSettings['totalMessages'], '</b> ', $txt[95], ' ', $txt['smf88'], ' <b>', $modSettings['totalTopics'], '</b> ', $txt[64], ' ', $txt[525], ' <b>', $modSettings['memberCount'], '</b> ', $txt[19], '<br />
', $txt[656], ': <b> <a href="', $scripturl, '?action=profile;u=', $modSettings['latestMember'], '">', $modSettings['latestRealName'], '</a></b>
</div>
[/code]
And replace with this:
[code]
<td width="50%" style="padding-left: 5px;" valign="top">';
// Show a random news item? (or you could pick one from news_lines...)
if (!empty($settings['enable_news']))
echo '
<div class="headertitles" style="width: 100%;"><img src="', $settings['images_url'], '/blank.gif" height="12" alt="" /></div>
<div class="headerbodies" style="width: 100%; position: relative; background-image: url(', $settings['images_url'], '/box_bg.gif); margin-bottom: 8px;">
<img src="', $settings['images_url'], '/', $context['user']['language'], '/newsbox.gif" style="position: absolute; left: -1px; top: -16px;" alt="" />
<div style="height: 50px; overflow: auto; padding: 5px;" class="smalltext">', $context['random_news_line'], '</div>
</div>';
// The "key stats" box.
echo '
<div class="headertitles" style="width: 100%;"><img src="', $settings['images_url'], '/blank.gif" height="12" alt="" /></div>
<div class="headerbodies" style="width: 100%; position: relative; background-image: url(', $settings['images_url'], '/box_bg.gif);">
<img src="', $settings['images_url'], '/', $context['user']['language'], '/keystats.gif" style="position: absolute; left: -1px; top: -16px;" alt="" />
<div style="height: 35px; padding: 5px;" class="smalltext">
<b>', $modSettings['totalMessages'], '</b> ', $txt[95], ' ', $txt['smf88'], ' <b>', $modSettings['totalTopics'], '</b> ', $txt[64], ' ', $txt[525], ' <b>', $modSettings['memberCount'], '</b> ', $txt[19], '<br />
', $txt[656], ': <b> <a href="', $scripturl, '?action=profile;u=', $modSettings['latestMember'], '">', $modSettings['latestRealName'], '</a></b>
</div>[/code]
Also if you change the height value in this line:
[code]<div style="height: 50px; overflow: auto; padding: 5px;" class="smalltext">', [/code]
this will change the height of the news box, and is line 8 of the code i posted above.