The attached URL exposes a really serious Win XP Vulnerability which could result in files being wiped from your hard drive simply by clicking a url or receiving a html file. You need to simply rename a file to deactivate this "Feature" but you need to check regularly to make sure it hasn't been reactivated
http://www.theregister.co.uk/content/4/27074.html
http://www.theregister.co.uk/content/4/27074.html