my computer won't let me access any of my programs. it keeps on saying "Application not found". i can't access my control panel options, download anything and actually use it, nor can i even type! it's becoming really frustrating. I've tried to download software but it won't let me use it to fix it. instead it tells me to download it again. i think the whole situation started when i downloaded iTunes and i think it got a virus. Please Help. i really want my computer to act normal again! and can you please give me some safe websites to download from so it doesnt act up anymore?