Seeing Red!

Question

Hi Guys,I use Windows XP Home Version 2002I experience visual interference on certain sites ie: Hostgator & Linkshare.com (where I cannot see the products, except strangely for American Express?). They are just small solid red rectangles. The problem is one of solid Red blocks or panels blanking out certain page information.No virus or other invader is being picked up.Any ideas guys?Kindest regardsAled