My business site has this at teh botom of each page: 'This site is developed to be W3C compliant. This allows this site to be viewed by the majority of browsers. Unfortunately Internet Explorer is not W3C compliant and you may experience a degraded viewing experience. Here at Optimum Health we like to use Firefox but there are many other W3C compliant browsers you could use.' As a basic measure, if you have to use IE, switch off all Active X elements you can. If a site relies on it - tough! My machine has AA software, AdAware, SpybotSD and 2 firewalls, including a hardware one in the router - IE still makes me vulnerable if I ever have to use it, so I choose not to.