Assuming you are using hte default theme, delete or 'comment out' the following code from the image.php file within the default theme folder.
`
<?php $num = getCommentCount(); echo ($num == 0) ? "" : ("Comments ($num)"); ?>
<?php while (next_comment()): ?>
<div class="comment">
<div class="commentmeta">
<?php printCommentAuthorLink(); ?> says:
<?=getCommentBody();?>
<?=getCommentDate();?>
,
<?=getCommentTime();?>
<?php printEditCommentLink('Edit', ' | ', ''); ?>
</div>
<?php endwhile; ?>
<!-- If comments are on for this image AND album... -->
Add a comment:
<form id="commentform" action="#" method="post">
<div><input type="hidden" name="comment" value="1" />
<input type="hidden" name="remember" value="1" />
<?php if (isset($error)) { ?><tr><td><div class="error">There was an error submitting your comment. Name, a valid e-mail address, and a comment are required.</td></tr><?php } ?>
<table border="0">
<tr>
<td><label for="name">Name:</label></td>
<td><input type="text" id="name" name="name" size="20" value="<?=$stored[0];?>" class="inputbox" />
</td>
</tr>
<tr>
<td><label for="email">E-Mail:</label></td>
<td><input type="text" id="email" name="email" size="20" value="<?=$stored[1];?>" class="inputbox" />
</td>
</tr>
<tr>
<td><label for="website">Site:</label></td>
<td><input type="text" id="website" name="website" size="40" value="<?=$stored[2];?>" class="inputbox" /></td>
</tr>
</table>
<textarea name="comment" rows="6" cols="40"></textarea>
<input type="submit" value="Add Comment" class="pushbutton" /></div>
</form>
</div>
</div>`
This starts at line 45 and ends at line 93 (inclusive)
I hope that helps. Let me know if you need any more assistance.