Please do a back-up before you copy these files to your Joomla root, our files will overwrite many Joomla/Virtuemart filer. Try a copy in your store first
Installation
1. Download 
Download the VirtueMart module from Downloads --> modules
2. Move files 
NB! There are many files that need to be changed so it would be a good idea to backup all files that will be written over.
Unpack the file "klarna_virtuemart_vX.XX.zip" (with Winzip for example) onto your local computer with the "joomla_root" folder corresponding to the root installation folder for Joomla-Virtuemart. Copy the contents of "joomla_root" to the joomla root folder on your website.
Do you have a separate VirtueMart template? Read this
These files will be revised during the installation.
NB! These files belong to VirtueMart. Any changes you have made in these files will be lost!
<"your joomla root">/administrator/components/com_virtuemart/classes/ps_checkout.php
<"your joomla root">/administrator/components/com_virtuemart/classes/ps_payment_method.php
<"your joomla root">/administrator/components/com_virtuemart/classes/ps_userfield.php
<"your joomla root">/administrator/components/com_virtuemart/languages/common/english.php
<"your joomla root">/administrator/components/com_virtuemart/html/basket.php
<"your joomla root">/administrator/components/com_virtuemart/html/checkout.index.php
<"your joomla root">/administrator/components/com_virtuemart/html/ro_basket.php
<"your joomla root">/administrator/components/com_virtuemart/html/store.payment_method_form.php
<"your joomla root">/administrator/components/com_virtuemart/html/store.payment_method_list.php
<"your joomla root">/components/com_virtuemart/themes/default/templates/basket/basket_b2c.html.php
<"your joomla root">/components/com_virtuemart/themes/default/templates/basket/ro_basket_b2c.html.php
<"your joomla root">/components/com_virtuemart/themes/default/templates/checkout/list_payment_methods.tpl.php
<"your joomla root">/components/com_virtuemart/themes/default/templates/common/display_klarna_price.php
<"your joomla root">/components/com_virtuemart/themes/default/templates/common/util.php
<"your joomla root">/components/com_virtuemart/themes/default/templates/common/price.tpl.php
KLARNA specifika filer!
<"your joomla root">/administrator/components/com_virtuemart/classes/kreditor.php
<"your joomla root">/administrator/components/com_virtuemart/classes/pclasses.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor.cfg.function.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor.cfg.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor.function.delbetalning.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor.function.konto.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor_del.cfg.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor_del.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor_konto.cfg.php
<"your joomla root">/administrator/components/com_virtuemart/classes/payment/ps_kreditor_konto.php
<"your joomla root">/administrator/components/com_virtuemart/html/checkout.kreditor.php
<"your joomla root">/administrator/jquery.js
<"your joomla root">/jquery.js
<"your joomla root">/kreditor_getcookie.php
<"your joomla root">/kreditor_pclassSwitch.php
<"your joomla root">/kreditor_setcookie.php
In order to create the necessary elements in your database, you will have to execute the code from "klarna_sql_install.txt" in your SQL system. For example, in phpMyAdmin, you can press the SQL button near the top left corner.
NB! This must be performed on a clean database. I.e. if you have an older version of the Klarna module, you must first remove it (this is done with "klarna_sql_remove.txt").
Copy and paste everything from "kreditor_sql_install.txt" file to the SQL field and then press Go.
If this does not go as planned or if you do not complete it at all, the module will not function. It is dependent on the database. If you receive any error messages when installing the SQL code, please report the problem to support@kreditor.se
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
and we shall assist you in solving the problem.