Header.php is not working!

try to use absolute file paths to the header images

example:
for instance this line from your header code:

<tr>
<td colspan="6"><img src="images/blogheader_01.gif" height="119" width="750" /></td>
</tr>

try and change it to:

<tr>
<td colspan="6"><img src="<?php bloginfo('template_url'); ?>/images/blogheader_01.gif" height="119" width="750" /></td>
</tr>

this part <?php bloginfo('template_url'); ?>/ should automatically add the absolute path to your images folder.
http://codex.wordpress.org/Function_Reference/bloginfo

do the same for all other images in your header.