i have loaded the avg anti virus to my computer and already have the free edition of pc tools spyware loaded do i need both if not which is the best one??? thanks
you need both anti virus and antispyware to keep a computer protected. it's difficult to determine what tools are better than other, because everyone has different needs. the best free anti virus is housecall online scan from trend micro. and the best anti spyware tools are spybot, ad-aware, windows defender, spyware terminator and super antispyware. you can see features of each of them at free spyware removers comparison.
To rely on an online scanner to detect viruses AFTER the machine has already been infected, hardly seems the best option to me. Install proper antivirus software such as AVG, as suggested by VHG.