Every Windows system administrator worth his name should use the SysInternals Suite from Microsoft. It provides you with a load of need-to-have utilities like the Process Explorer, Autoruns, Process Monitor and many many others.
The entire collection of tools is now being bundled into the SysInternals Suite. As these tools are being updated very frequently, it causes a lot of effort to stay up to date.
John Robbins of Wintellect created a neat PowerShell script to automate the downloading and installation of this suite to a folder of your choice (preferably to one in your path)!
The only prerequisites to running this script is to have PowerShell and 7-Zip installed. Two tools I install on any computer I use anyway 
