Disable Excess Windows Processes at Boot
Windows Vista starts with almost one hundred processes running and many of these being unneeded. There are four options that describe how each process is started, these being manual (start), automatic, automatic delayed and disabled. Having said that, you don't want to disable something your not sure of, it could prevent you from getting into Vista again.
If you make a mistake, this link will allow you to reset your services back to the original Vista Values, no matter what version of Vista: http://www.speedyvista.com/registry.html
www.blackviper.com
A safe idea would be to actually copy and save the bat file that applies to you, on a disk, so you can get to it if you need it. One day I found that my Internet wouldn't work as I disabled the wrong service.
Disable Excess Windows Processes at Boot
Blogged with the Flock Browser