This is a list of files needed by PhotoPost Classifieds for normal operation:

data/*
help/*
images/*
forums/*
languages/*
stylesheets/*
templates/*
uploads/*

addfav.php
adm-admlog.php
adm-approve.php
adm-backup.php
adm-cats.php
adm-db.php
adm-editcfg.php
adm-inc.php
adm-index.php
adm-main.php
adm-menu.php
adm-modcom.php
adm-modfb.php
adm-move.php
adm-options.php
adm-order.php
adm-product.php
adm-style.php
adm-userg.php
adm-users.php
bulkupload.php
catopts.php
comments.php
config-inc.php
dcfp_auth_lib.php
editproduct.php
footer.htm
header.htm
header-inc.php
image-inc.php
index.php
login.php
logout.php
member.php
payment.php
pclzip.inc.php
pp-inc.php
register.php
renew.php
reportproduct.php
search.php
sendnotice.php
showcat.php
showproduct.php
uploadproduct.php
watermark.php

The following files are only needed during the install or upgrade process and should be removed when you have finished:

install.php

and, of course, the documentation directory does not need to be uploaded.