if you guys are looking to integrate webpost into your phpnuke there are easier ways then just creating blocks or even modules. here is how i did mine. My way gives the same effect of the module without all the fuss or even mess. any n00b can make theirs seem like a module if you follow my steps
here is mine
step 1 install webpost to the base directory in phpnuke
step 2 open listing.php in a text editor i used a free one called crimson editor
step 3 find line include("db_inc.php");
step 4 insert include("header.php");
step 5 save the file
step 6 upload and overwrite the file.
step 7 goto your
http://www.youraddress.com/nukedirectory/listing.php
if you want to add it to your navigation it is easiest by just adding creating a html block for the sites navigation as i have done