Okay, I'm just going to take a shut in the dark, in hopes someone will be able to point out my errors. Here is the code that right now is adding a pane:

Tournament Roster
Fields: Player Name, Position, Email Address

However, nothing is being written to the database:
Once this gets figured out, I need to repeat the three fields several times to allow for someone to enter their entire team. Advice?

/*******************************************************************************
* Hook Functions (Ubercart)
******************************************************************************/

/**
* Implementation of hook_checkout_pane().
*/
function uc_lead_checkout_pane() {
$panes[] = array(
'id' => 'lead',
'callback' => 'uc_checkout_pane_lead',
'title' => t('Tournament Roster'),
'desc' => t('Tournament roster is required upon registering for a tournament.'),
'weight' => 8,
);

return $panes;
}

/**
* Implementation of hook_order().
*/
function uc_lead_order($op, &$arg1, $arg2) {
switch ($op) {
// Save the lead to the database.
case 'save':
if (!empty($arg1->lead['name'])) {
db_query("UPDATE {uc_leads} SET lead_name = '%s', lead_position = '%s', lead_email = 's' "
."WHERE order_id = %d", $arg1->lead['name'],
$arg1->lead['position'], $arg1->lead['email'], $arg1->order_id);
if (db_affected_rows() == 0) {
db_query("INSERT INTO {uc_leads} (lead_id, order_id, lead_name, lead_position, lead_email) VALUES (%d, %d, '%s', '%s', '%s')",
db_next_id('{uc_leads}_lead_id'), $arg1->order_id,
$arg1->lead['name'], $arg1->lead['position'], $arg1->lead['email']);
}
}
break;

// Load the lead from the database.
case 'load':
$result = db_query("SELECT * FROM {uc_leads} WHERE order_id = %d", $arg1->order_id);
if ($data = db_fetch_object($result)) {
$arg1->lead['name'] = $data->lead_name;
$arg1->lead['position'] = $data->lead_position;
$arg1->lead['email'] = $data->lead_email;
}
break;

// Delete the lead from the database.
case 'delete':
db_query("DELETE FROM {uc_leads} WHERE order_id = %d", $arg1->order_id);
break;
}
}

/**
* Implementation of hook_order_pane().
*/
function uc_lead_order_pane() {
$panes[] = array(
'id' => 'lead',
'callback' => 'uc_order_pane_lead',
'title' => t('Tourname Roster'),
'desc' => t(''),
'class' => 'abs-left',
'weight' => 7,
'show' => array('view'),
);

return $panes;
}

/*******************************************************************************
* Callback Functions, Forms, and Tables
******************************************************************************/

function uc_checkout_pane_lead($op, &$arg1, $arg2) {
switch ($op) {
case 'view':
$description = t('Tournament roster is required upon registering for Pro Hockey Tournaments');

$contents['lead_name'] = array(
'#type' => 'textfield',
'#title' => t('Player Name'),
'#default_value' => $arg1->lead['name'],
);

$contents['lead_position'] = array(
'#type' => 'textfield',
'#title' => t('Position'),
'#default_value' => $arg1->lead['position'],
);

$contents['lead_email'] = array(
'#type' => 'textfield',
'#title' => t('Email'),
'#default_value' => $arg1->lead['email'],
);

return array('description' => $description, 'contents' => $contents);

case 'review':
{
$review[1] = array('title' => t('Roster'), $arg1->lead['name']);
$review[2] = array('title' => t('Position'), $arg1->lead['position']);
$review[3] = array('title' => t('Email'), $arg1->lead['email']);
}
return $review;

}
}

function uc_order_pane_lead($op, $arg1) {
switch ($op) {
case 'view':
if (empty($arg1->lead['name'])) {
$lead = t('None specified');
}
else {
$lead = $arg1->lead['name'];
}
return t('Roster: !lead', array('!lead' => $lead));
}
}

I think your checkout pane function needs to do stuff in the 'process' $op. That's how the data from 'view' gets put into 'review'. The cart checkout panes probably do the most similar thing to you, and they mostly don't do funny things with JavaScript.

I've been getting a few questions regarding this code, so I thought I would provide you with the full module file that I created for one of the panes. I ended up removing the File upload and instead created Two separate modules to control the panes for "Individual Player" and "Team" Registrations. I checked to see what values were in the SKU field to determine which pane to display. The conditional code is in one of my previous posts. Anyways my custom module for "Individual Player" ended up looking like the following. Hope this helps others. FYI.. I added "Select and Text" fields in my panes.