Vista Services Optimizer
A newer version of Vista Services Optimizer is available.Or, Learn More About Vista Services Optimizer
Full user review
"Works with Windows 7 too."
It does shut down some unessential services in Windows 7 too. It helps speed up the boot time, but I have switched to a SSD drive as the boot drive too.
It did shut down 2 services that were needed to run some of my software.
This is a solid program. Use blackviper.com to find out more about XP, Vista and Windows 7 services, because you may have to re-enable a couple like I did. I recommend you make a Windows System Restore point before running this program though. If something goes wrong, it is then an easy task to fix.