All the mentioned security measures here are free and some use little to no system resources. I updated the VMware link to make it easier to find the free version, sorry for the confusion. OpenDNS doesn't work for everybody, but it should for most people. But as an example, I can't use it because the Sprint 3G network charges extra to allow users to provide their own DNS. If you weren't noticing a difference in speed or responsiveness, did you check to make sure it was working right? Maybe your ISP doesn't allow different DNS servers. Ccleaner gets most of the (un)important temp files, and I've never seen Disk Cleanup find anything Ccleaner didn't. If you look in Ccleaner's options, you can find additional items to delete and check their corresponding box to wipe them out. The only result I ever get from Disk Cleanup is old/unused file compression, which I stay away from due to speed concerns. Compressing hard drive files usually doesn't save much space anyway. I apologize if I may have been unclear, but I'm not actually using each method I mentioned on my main system. In fact, right now I'm only using a few of them. I merely wanted to include as many helpful security alternatives as possible in the guide for people to use as a resource. I absolutely want the information in this resource to be as accurate as possible. I also want it to be readable so that even an average user can learn from it if they are inclined. I wasn't always a geek, and I learned a lot by reading online resources and talking to other geeky people, so I hope this can be a good starting point for people who are learning. Experienced IT users know their stuff already, so I know I don't have to explain anything to them. I made several changes and additions to the guide in light of the corrections you made. I hope this clarifies things more accurately. Instead of letting what you think is 99% of the world rot with a lack of information, I decided to share my knowledge for those who care to learn. There are people out there who wish to secure their systems with other methods, either as an alternative or an additive measure. I treat every "computer noobs" as if they have as much or more knowledge than me, even when they have made the most ignorant mistakes. My attitude toward my clients is why they keep coming back, and bringing more clients to me. If you treat everyone like they are too stupid to ever learn about computers, I guarantee you they will never learn. Yes, modern anti-virus programs use fewer resources. Yes, I like saving 5mb of memory here and there. Yes, it's pointless with as powerful a computer as I have. I realize there aren't many people in need of this kind of security advice. Most people just use anti-virus. Still, I wanted to increase the available options for anybody looking for more information. Whether they decide to run these measures with or without anti-virus on their system is not up to me. I'm only providing the info, you choose whether to use it or not.