If you are wanting to change the message to something else look inside the file includes/languages/english/index.php
Inside that file you will see a line that says define('HEADING_TITLE', 'Let\'s See What We Have Here');
Just change the text between the ' ' symbols and save and upload the revised file, and the title will be changed. Or you can just leave is blank between the ' ' symbols and nothing will appear. Make sure that the 2 ' ' symbols stay there, php is very tempramental and the page will be blank if you miss a single keystroke.

but even if you choose to leave the HEADING_TITLE blank you will still get a little picture that pops up.
If you want to completely remove the wording and the picture then you will hafta edit the pages in which the title appears.
To do this open the .php page that the title appears on, for instance index.php
on line 232 you will see a line that says <td class = "pageHeading"><?php echo HEADING_TITLE; ?></td>
That is the line of code that calls for the heading title in the english index file and if you remove the
<?php echo HEADING_TITLE; ?> part a title will not appear on that page, further down the code on line 272 it says <td align="right"><?php echo tep_image(DIR_WS_IMAGES . $image, HEADING_TITLE, HEADING_IMAGE_WIDTH, HEADING_IMAGE_HEIGHT); ?></td>
Removing
<?php echo tep_image(DIR_WS_IMAGES . $image, HEADING_TITLE, HEADING_IMAGE_WIDTH, HEADING_IMAGE_HEIGHT); ?> will keep the image from appearing.
Cheers, hope this helps you