I have tried to access my Shopping Cart on a website and am continually denied by Kaspersky Standard, which displays a screen indicating that the website hosts a 'Trojan-PSW' and is preventing me access to the cart. Therefore I cannot remove/edit items from my cart. I have run a Full System Scan on my PC with Kaspersky Standard and this states that my system is clean. I have emailed the website. They have informed me that they have performed a scan with Kaspersky (version unknown) and that the result is that their system is virus-free and that my PC must be contaminated. How do I proceed from here please?