Too much time to boot up your windows?

Do you have to wait several minutes until your computer boots up your windows OS?

This is usually caused by a lot of processes running when windows start.
To reduce the time needed to boot up the entire system you would have to remove some/most of them. Do you have lots of icons in your taskbar next to the clock? These are programs, running in the computer's memory, which use some/a lot of resources. Most of these processes start when you boot up your computer.
To remove them from the system start-up you would have to do these things:
First, open the start menu. Then in ("All programs" for Windows XP, and "Programs" for Windows 9x) go to "Startup" and see if any of the unwanted programs are there. In windows 98se, ME, 2000 and XP you can just right click on the unwanted application and choose "delete", but for windows 95 you have to open C:\Windows\Start menu\Programs\Startup (assuming C:\Windows is your windows installation directory) to delete the programs from the windows startup.

Second: Some of the programs aren't showing up in the "start-up". You'll have to do the following:
Press the start menu and click "Run" then type "msconfig" and click "OK"
A little window will show up. Click on the "Startup" tab, and just uncheck the unwanted applications. Be careful though, as some of these processes are critical for the system.