[Kirk Y]

There's already a variable for the Latest User.

Latest User:

$newusername = $vbulletin->userstats['newusername'];

Top Poster: [sql]$topposter = $db->query_first("
SELECT userid, usergroupid, IF(displaygroupid=0, usergroupid, displaygroupid) AS displaygroupid, username, posts
FROM " . TABLE_PREFIX . "user
WHERE posts > 0
ORDER BY posts DESC LIMIT 1");[/sql]

Use $topposter[username], $topposter[userid], $topposter[usergroupid], or $topposter[posts] as variables.