I am using Windows XP-SP-2 w/Mozilla Firefox updated browser and my computer does not allow me to complete a download of any antivirus programs so have not been protected for over a year now. Am a caregiver for my 97 year old aunt every day so have not had much time to fix this nagging and worrisome problem. I have high-speed internet but it is very slow so I imagine my computer is quite infected. I am not very computer savvy but do sell on eBay when I get the time so have some knowledge. Thanks for help from anyone.