Ok, here's where I am so far, getting the custom group icons under a user's name in showflat (I never use showthreaded). Any help is appreciated! =)

In showflat.inc.php, changed this (around line 631):
PHP Code
// Cycle through the posts
	$query = "
	SELECT t1.POST_ID,t2.USER_DISPLAY_NAME,t1.POST_POSTED_TIME,t1.POST_POSTER_IP,t1.POST_SUBJECT,t1.POST_BODY,t1.POST_IS_APPROVED,t3.USER_AVATAR,t3.USER_TITLE,t3.USER_NAME_COLOR,t1.POST_ICON,t1.POST_HAS_POLL,t1.POST_HAS_FILE,t1.POST_PARENT_ID,t2.USER_MEMBERSHIP_LEVEL,t3.USER_SIGNATURE,t1.POST_LAST_EDITED_TIME,t1.POST_LAST_EDITED_BY,t3.USER_LOCATION,t3.USER_TOTAL_POSTS,t2.USER_REGISTERED_ON,t3.USER_RATING,t3.USER_AVATAR_WIDTH,t3.USER_AVATAR_HEIGHT,t2.USER_ID,t1.POST_PARENT_USER_ID,t3.USER_BIRTHDAY,t3.USER_PUBLIC_BIRTHDAY,t1.POST_ADD_SIGNATURE,t3.USER_ACCEPT_PM,t3.USER_HOMEPAGE
	FROM  {$config['TABLE_PREFIX']}POSTS AS t1,
	{$config['TABLE_PREFIX']}USERS AS t2,
	{$config['TABLE_PREFIX']}USER_PROFILE as t3
	WHERE t1.TOPIC_ID  = ?
	AND t1.USER_ID = t2.USER_ID
	AND t1.USER_ID = t3.USER_ID
	$Viewable
	ORDER BY POST_ID
	$Limit
	";

to this:
PHP Code
 // Cycle through the posts
	$query = "
	SELECT t1.POST_ID,t2.USER_DISPLAY_NAME,t1.POST_POSTED_TIME,t1.POST_POSTER_IP,t1.POST_SUBJECT,t1.POST_BODY,t1.POST_IS_APPROVED,t3.USER_AVATAR,t3.USER_TITLE,t3.USER_NAME_COLOR,t1.POST_ICON,t1.POST_HAS_POLL,t1.POST_HAS_FILE,t1.POST_PARENT_ID,t2.USER_MEMBERSHIP_LEVEL,t3.USER_SIGNATURE,t1.POST_LAST_EDITED_TIME,t1.POST_LAST_EDITED_BY,t3.USER_LOCATION,t3.USER_TOTAL_POSTS,t2.USER_REGISTERED_ON,t3.USER_RATING,t3.USER_AVATAR_WIDTH,t3.USER_AVATAR_HEIGHT,t2.USER_ID,t1.POST_PARENT_USER_ID,t3.USER_BIRTHDAY,t3.USER_PUBLIC_BIRTHDAY,t1.POST_ADD_SIGNATURE,t3.USER_ACCEPT_PM,t3.USER_HOMEPAGE,t4.GROUP_ID
	FROM  {$config['TABLE_PREFIX']}POSTS AS t1,
	{$config['TABLE_PREFIX']}USERS AS t2,
	{$config['TABLE_PREFIX']}USER_PROFILE as t3,
	{$config['TABLE_PREFIX']}USER_GROUPS as t4
	WHERE t1.TOPIC_ID  = ?
	AND t1.USER_ID = t2.USER_ID
	AND t1.USER_ID = t3.USER_ID
	AND t1.USER_ID = t4.USER_ID
	$Viewable
	ORDER BY POST_ID
	$Limit
	";

and after this (around line 679):
PHP Code
$postrow[$i]['UserStatus'] = "";
I added this:
PHP Code
// Callie Hack
		$postrow[$i]['GroupId'] = "";
		// end Callie Hack
and then BEFORE this (around line 923):
PHP Code
// ---------------------
		// Is it their birthday?
I added this:
PHP Code
// callie hack group pic
		// Figure out what to display based on their groups
	if (preg_match("/-5-/",$GroupId))  { // adjust this group number if needed
			   $postrow[$i]['GroupName'] = "Premium";
			$postrow[$i]['GroupPic'] = "<a href=\"http://www.hairtell.com/ubbthreads/premium.php\"><img src=\"http://www.hairtell.com/forum/images/subscriber01.jpg\" border=\"0\"></a>";
	}
	if (preg_match("/-6-/",$GroupId))  { // adjust this group number if needed
			   $postrow[$i]['GroupName'] = "Pro";
			$postrow[$i]['GroupPic'] = "<a href=\"http://www.hairtell.com/ubbthreads/premium.php\"><img src=\"http://www.hairtell.com/forum/images/subscriber02.jpg\" border=\"0\"></a>";
	}
			// test it $postrow[$i]['GroupPic'] =$GroupId;
			// end callie hack group pic
And then in showflat.tpl after this (around line 101):
PHP Code
{$postrow[post].Title}
I added this:
PHP Code
<!-- callie hack -->
{$postrow[post].GroupPic}


<!-- end callie hack -->
But it doesn't work because the groups arent in a string separated by "-", like in the 6.5 database. They are a sequence, inside ubbt_USER_GROUPS. When I ran this, it didn't seem to do anything, so I uncommented the line in showflat.inc.php:
PHP Code
// test it $postrow[$i]['GroupPic'] =$GroupId;
and what happened is, it printed the user's post once for each group they belonged to... so that if they belonged to 3, 5 and 7 it printed:

UserGuy Hey this is my post!
3

UserGuy Hey this is my post!
5

UserGuy Hey this is my post!
7

So I'm kinda at a stopping point. Any suggestions from you smarties out there? =)
Thx, Callie