How Many Anti Viruses And Spyware Do You Need And Do You Need The Vista Sidebar?

i have lots of anti virus and anti spyware programs and should i delete some? also what are the best ones dont mind if you pay for them. one last thing do you actually need the windows vista side bar or can i delete it.

How Do Anti-virus And Anti-spyware Programs Work?

How do anti-virus and anti-spyware programs work? How do they detect and remove all the viruses, malicious software, and spyware on someone’s PC? What were the first decent anti-virus and anti-spyware software programs, and what year did they become available?