It can simply be downloaded and used as a portable application to customize your Windows 7 services settings, to meet your requirements. With judicious tweaking, it can make your system faster, as you will be disabling services which you do not require.
Tweaking a system has to be done carefully, and more so in the cases of Services. A Windows service is a long running executable that performs specific functions and which is designed not to require user intervention. Windows services can be configured to start when the operating system is booted and run in the background as long as Windows is running, or they can be started manually when required.
You can always tweak your services manually individually, but what this utility does is automate the entire process to give you the desired settings. Based on the recommendations of the BlackVipers Windows 7 Service Configuration Guide, the utility offers 3 sets of pre- configured tweaks :