David,

What and easy fix this turned out to be (smiling with acorn bits at
corner of mouth). I added one line to upload_both.inc.php:

> $file = strtolower($file);

I added this right after line 15 which is:

> $file = str_replace(' ', '_', $_FILES['image']['name']);

Now it changes all file names and extensions to lowercase. Sometimes
it's just too easy.

Brett