I am having problems using the shopping cart - what should I do?

The main reasons why customers may encounter problems using the shopping cart are that (a) customers are ordering from within a firewalled company network, or (b) ordering from a non-standard PC/Mac unit (eg a games console). In both these cases, the shopping cart may not function properly, so we recommend using a normal stand-alone PC or Mac where possible. Another possible source of problems is that the security settings on your web browser are set at maximum, which prevents your computer communicating with our server properly. If using Internet Explorer, adjust the security level slider to a medium setting. For other browsers, "Java", "JavaScript" and "Cookies" should all be enabled in the browser options.