On most, but not all, web sites pictures are replaced by small crosses. I right-click on these and then click "show picture" but nothing happens. I have IE7, Norton antivirus, ZoneAlarm Pro and Counterspy. Is one of these blocking the pics? It is a fairly new problem. Very grateful for advice.
Thankyou Provider 2 for your link to Microsoft. I should have had the sense to go there myself! I have worked my way through their suggestions and I think the check to View/Encoding/Auto Select may have done the trick. I am very grateful to you for your help, and also to Technotiger for his.