Re-resizing node images

I don't have a cvs account (or at least is this I think it's called) and I don't know and don't have the time to learn how to create a patch file. I can try to upload my new module file. If anyone can create a patch from it, feel free to do so. For the new file to work, you need to alter the node_images table inserting 2 new columns (mediumpath varchar(255) NOT NULL default '' and mediumsize int(10) unsigned NOT NULL default '0')
If anyone interested my function to display images is:

/**
 * Show node images in the node view.
 */
function [template_name]_node_images_view($node, $teaser, $page, $format = NULL) {
  if (arg(2) == 'image_gallery' || empty($node->node_images)) return;

  $output = '';
  $i = 0;

  // set maximum number of images for teaser/body
  $view = ($teaser ? 'teaser' : 'body');
  $count = variable_get('node_images_'.$view.'_images_'.$node->type, 2);
  if (isset($count) && $count === 0) return;
  if (!$format) {
    $format = variable_get('node_images_'.$view.'_format_'.$node->type, 'thumbs');
  }

  foreach((array)$node->node_images as $id=>$image) {
    $description = check_plain($image->description);
    $pattern = '<img src="%path" alt="%description" class="%class" />';
    $thumb = strtr($pattern, array('%path'=>file_create_url($image->thumbpath), '%description'=>$description, '%class' => 'node_image_tn'));
	$medium = strtr($pattern, array('%path'=>file_create_url($image->mediumpath), '%description'=>$description, '%class' => 'node_image_md'));
    $fullsize = strtr($pattern, array('%path'=>file_create_url($image->filepath), '%description'=>$description, '%class' => 'node_image'));

    if ($info = getimagesize($image->filepath)) {
      $width = $info[0] + 36;
      $height = $info[1] + 36;
    }
    else {
      $width = 420;
      $height = 315;
    }

    if ($format == 'thumbs') {
      $output .= '<a href="'.url('node/'.$node->nid).'" title="'.$description.'">'.$thumb.'</a> ';
    }
	elseif ($format == 'medium') {
      $output .= '<a href="javascript:void(0);" title="'.$description.'" onclick="window.open(\''.
        file_create_url($image->filepath).'\', \'\', \'height='.$height.',width='.$width.'\');">'.$medium.'</a> ';
    }
	else {
	  $output .= $fullsize . ' ';
	}
    if ($count>0 && ++$i >= $count) break;
  }
  return $output;
}

I use a class for node images cause I want my pages to be XHTML 1.0 strict, and setting the width and height of images in img tag brakes the strictness.

A note anyway, even if an option to delete the original image is set, the warning will still remain, cause the image is uploaded before any resizing and copying. As a consequence the image still has to respect the server limits.

OK, I have done a proper patch to create an admin page for resizing the thumbnails after they are uploaded. To resize you go first to admin/settings/node_images and enter the size you want, after that you go to admin/build/node_images, check the box and hit enter. That's all.
Maybe I'll come with the path to enable the thickbox gallery for node images when I'll have the time.