Hard drive recently crashed - folks at the pc store were nice enough to update my OS to Windows 7. Windows 7 has microsoft security essentials installed. On my previous platform I was running SpywareBlaster, AVG Antivirus, Spybot S&D, AdAware, and Malwarebytes. My question is should I have all these programs installed, or is it a bit excessive? Now that I have the microsoft security essentials installed, which ones should I have in addition? Are there any I'm missing from this list? Thanks!