Ok. I figured it all out...even though I really don't use it.

I make no warranty on any of this...so change your code at your own risk - and as always back up your files before you make any changes.
You will be dealing with two files in yourgallery/includes/functions.inc.php and yourgallery/lang/english.php
This assumes that you are using english - other language files will need to be changed as required - including the fallback file. It also assumes that you are using Highslide 3.04 and CPG 1.4.18.
First, in functions.inc.php find the first occurrence of the following (around line 1696):
$pic_title =$lang_display_thumbnails['filename'].$row['filename']."\n".
$lang_display_thumbnails['filesize'].($row['filesize'] >> 10).$lang_byte_units[1]."\n".
$lang_display_thumbnails['dimensions'].$row['pwidth']."x".$row['pheight']."\n".
$lang_display_thumbnails['date_added'].localised_date($row['ctime'], $album_date_fmt);
and comment it out (put // in front of each line).
Now insert the following above that set of code:
//custom start 29-JUL-2008
$pic_title =$lang_display_thumbnails['title'].$row['title']."\n".
$lang_display_thumbnails['filesize']."\n".
$lang_display_thumbnails['dimensions']."\n".
$lang_display_thumbnails['date_added'];
//custom end 29-JUL-2008
Now in english.php find the following (around line 270):
$lang_display_thumbnails = array(
'filename' => 'Filename=', //cpg1.4
'filesize' => 'Filesize=', //cpg1.4
'dimensions' => 'Dimensions=', //cpg1.4
'date_added' => 'Date added=', //cpg1.4
);
Comment out the 2nd line to the 5th line and insert a new line with a new array value of 'title' - it should look like this when you are done:
$lang_display_thumbnails = array(
'title' // custom 29-JUL-2008
// 'filename' => 'Filename=', //cpg1.4
// 'filesize' => 'Filesize=', //cpg1.4
// 'dimensions' => 'Dimensions=', //cpg1.4
// 'date_added' => 'Date added=', //cpg1.4
);
Hopefully this helps you out - I have not thoroughly tested this, so I have no idea if it breaks something somewhere else that the array is used. As I said, I don't use highslide anymore. Remember that if you upgrade, you will have to make these modifications yourself or apply updates to these files manually.
If anyone has a better suggestion, please jump in.