File list (Check if you may need any files):
PHP_Point_Of_Sale_9.1
.....................\backupDB.php
.....................\backups
.....................\classes
.....................\.......\barcode.php
.....................\.......\db_functions.php
.....................\.......\display.php
.....................\.......\form.php
.....................\.......\security_functions.php
.....................\customers
.....................\.........\customers_barcode.php
.....................\.........\form_customers.php
.....................\.........\index.php
.....................\.........\manage_customers.php
.....................\.........\process_form_customers.php
.....................\general_public_license.txt
.....................\home.php
.....................\images
.....................\......\config.gif
.....................\......\customers.gif
.....................\......\items.gif
.....................\......\login_01.gif
.....................\......\login_02.gif
.....................\......\login_03.gif
.....................\......\login_04.gif
.....................\......\login_05.gif
.....................\......\login_06.gif
.....................\......\login_07.gif
.....................\......\login_08.gif
.....................\......\login_09.gif
.....................\......\login_10.gif
.....................\......\login_bg.gif
.....................\......\menubar_01.gif
.....................\......\menubar_02.gif
.....................\......\menubar_03.gif
.....................\......\menubar_04.gif
.....................\......\menubar_05.gif
.....................\......\menubar_06.gif
.....................\......\menubar_07.gif
.....................\......\menubar_bg.gif
.....................\......\menubar_reports_01.gif
.....................\......\menubar_reports_02.gif
.....................\......\menubar_reports_03.gif
.....................\......\menubar_reports_04.gif
.....................\......\menubar_reports_05.gif
.....................\......\menubar_reports_06.gif
.....................\......\menubar_sales_01.gif
.....................\......\menubar_sales_02.gif
.....................\......\menubar_sales_03.gif
.....................\......\menubar_sales_04.gif
.....................\......\menubar_sales_05.gif
.....................\......\menubar_sales_06.gif
.....................\......\reports.gif
.....................\......\sales.gif
.....................\......\spacer.gif
.....................\index.php
.....................\install
.....................\.......\index.php
.....................\.......\installer.php
.....................\.......\makeinstall.php
.....................\items
.....................\.....\brands
.....................\.....\......\form_brands.php
.....................\.....\......\manage_brands.php
.....................\.....\......\process_form_brands.php
.....................\.....\categories
.....................\.....\..........\form_categories.php
.....................\.....\..........\manage_categories.php
.....................\.....\..........\process_form_categories.php
.....................\.....\discounts
.....................\.....\.........\form_discounts.php
.....................\.....\.........\manage_discounts.php
.....................\.....\.........\process_form_discounts.php
.....................\.....\form_items.php
.....................\.....\index.php
.....................\.....\items_barcode.php
.....................\.....\manage_items.php
.....................\.....\process_form_items.php
.....................\.....\suppliers
.....................\.....\.........\form_suppliers.php
.....................\.....\.........\manage_suppliers.php
.....................\.....\.........\process_form_suppliers.php
.....................\language
.....................\........\english.php
.....................\login.php
.....................\logout.php
.....................\menubar.php
.....................\readme.txt
.....................\reports
.....................\.......\all_brands.php
.....................\.......\all_categories.php
.....................\.......\all_customers.php
..