I would think what you'd want to do in the plugin code is something like this:
Code:
ob_start();
//Start of cpmfetch and lighbox integration by fangweile
echo "<CENTER>";
include "/home/content/l/a/z/lazarous83/html/gallery/cpmfetch/cpmfetch.php";
$objCpm = new cpm("/home/content/l/a/z/lazarous83/html/gallery/cpmfetch/cpmfetch_config.php");
$option = array(
'linktemplate'=>'http://kidawa.com/gallery/displayimage.php?album={{pAid}}&pos=-%i" title="{{pTitle}} <br> Viewed: {{pHits}} times | Filename: {{pFilename}} | Size: {{pFilesize}} bytes | Dimension: {{pWidth}} x {{pHeight}} <br><a href=http://www.kidawa.com/gallery/displayimage.php?album={{pAid}}&pos=-%i>| View Photo |</a>',
'linkstyle' =>'image" rel="lightbox[smf]',
'alttag' => 'Click to enlarge',"imagewidth"=>"90","imageheight"=>"90",
'tablestyle' => 'windowbg" width="90" height="90" cellpadding="5" cellspacing="20 ',
"imagestyle" => "teststyle",
'cellstyle' => 'windowbg windowbg_hover" style="border: 1px solid #676767" bgcolor="#000000" valign="middle" align="center');
$objCpm->cpm_viewLastAddedMedia(1,6,$option);
$objCpm->cpm_close();
//echo '<a href="http://kidawa.com/gallery/upload.php">| Upload! |</a>';
echo '</center>';
$includedphp = ob_get_contents();
ob_end_clean();
(it's just the code you posted put inside the plugin code you posted.)