I'm using 6 antispywarekillers and 2 antivirus programs and a firewall. Ewido Counterspy Spysweeper AdAware Spybot S&D XsoftSpy SE NOD32 Avast4.6 ZoneAlarm My q'n is do i really need regdefend even when having running these programs in the background. I'm a average pc user and not very technical. I don't know where to put this q'n so i try it here as well, I'm using PerfectDisk 6 from raxco and it is very good, what i like to have is a very good program for my internal memory or other programs that will increase my pc performance. Hope to hear from anybody.