Index: wp-admin/network/site-new.php
===================================================================
--- wp-admin/network/site-new.php	(revision 16307)
+++ wp-admin/network/site-new.php	(working copy)
@@ -104,8 +104,8 @@
 } ?>
 <form method="post" action="<?php echo network_admin_url('site-new.php?action=add-site'); ?>">
 <?php wp_nonce_field( 'add-blog', '_wpnonce_add-blog' ) ?>
-	<table class="form-table">
-		<tr class="form-field form-required">
+	<table id="add-new-site-table" class="form-table">
+		<tr id="site-domain" class="form-field form-required">
 			<th scope="row"><?php _e( 'Site Address' ) ?></th>
 			<td>
 			<?php if ( is_subdomain_install() ) { ?>
@@ -117,15 +117,16 @@
 			?>
 			</td>
 		</tr>
-		<tr class="form-field form-required">
+		<tr id="site-title" class="form-field form-required">
 			<th scope="row"><?php _e( 'Site Title' ) ?></th>
 			<td><input name="blog[title]" type="text" class="regular-text" title="<?php _e( 'Title' ) ?>"/></td>
 		</tr>
-		<tr class="form-field form-required">
+		<tr id="site-email" class="form-field form-required">
 			<th scope="row"><?php _e( 'Admin Email' ) ?></th>
 			<td><input name="blog[email]" type="text" class="regular-text" title="<?php _e( 'Email' ) ?>"/></td>
 		</tr>
-		<tr class="form-field">
+		<?php do_action( 'wpms_new_site_form' ); ?>
+		<tr id="site-notice" class="form-field">
 			<td colspan="2"><?php _e( 'A new user will be created if the above email address is not in the database.' ) ?><br /><?php _e( 'The username and password will be mailed to this email address.' ) ?></td>
 		</tr>
 	</table>
Index: wp-admin/network/user-new.php
===================================================================
--- wp-admin/network/user-new.php	(revision 16307)
+++ wp-admin/network/user-new.php	(working copy)
@@ -63,16 +63,17 @@
 		echo '<div id="message" class="updated"><p>' . $msg . '</p></div>';
 } ?>
 	<form action="<?php echo network_admin_url('user-new.php?action=add-user'); ?>" id="adduser" method="post">	
-	<table class="form-table">
-		<tr class="form-field form-required">
+	<table id="add-new-user-table" class="form-table">
+		<tr id="user-username" class="form-field form-required">
 			<th scope="row"><?php _e( 'Username' ) ?></th>
 			<td><input type="text" class="regular-text" name="user[username]" /></td>
 		</tr>
-		<tr class="form-field form-required">
+		<tr id="user-email" class="form-field form-required">
 			<th scope="row"><?php _e( 'Email' ) ?></th>
 			<td><input type="text" class="regular-text" name="user[email]" /></td>
 		</tr>
-		<tr class="form-field">
+		<?php do_action( 'wpms_new_user_form' ); ?>
+		<tr id="user-notice" class="form-field">
 			<td colspan="2"><?php _e( 'Username and password will be mailed to the above email address.' ) ?></td>
 		</tr>
 	</table>