Turn off Internet Printing by deselecting it in the Windows Features dialog box.
Assorted Interface Beautification Options
You can save some additional clock cycles by turning off all or some of Vista's pretty interface options, not all of which are directly connected to Aero.
To see the options, click Start, right-click Computer, and select Properties. Click the Advanced System Properties link, the Advanced tab, and then the Settings button inside the Performance box.
You can uncheck all of the listed options by selecting Adjust for best performance, or you can simply uncheck the ones you don't care for. I unchecked Fade or slide menus into view, Fade or slide ToolTips into view, Show shadows under menus, and Slide open combo boxes. The rest I left on.
Remote Assistance
Don't worry about turning this item off if you run Vista Home (Basic or Premium). You don't have it. If you run Vista Business or Ultimate, though, you can use Remote Assistance to control one PC from another--a useful tool if you regularly provide tech support for a relative living far away.
On the other hand, if you're not providing long-distance support, or if you prefer a third-party remote-control program, Remote Assistance is just a waste of resources. To get rid of it, click Start, right-click Computer, and select Properties. Click Remote Settings. Uncheck Allow Remote Assistance connections to this computer.
Internet Printing Client
Do you ever print documents over the Internet? Neither do I. Chances are, you won't miss out on anything by disabling Vista's Internet Printing Client.
Open the 'Programs and Features' control panel and click the Turn Windows features on or off link on the left; you'll get the Windows Features dialog box. Expand the Print Services section and uncheck Internet Printing Client.
Click OK at this point, and then wait several more minutes for the system to ask to reboot.