Which processes should i kill?

My computer is pretty slow so i checked the processes using process viewer on norton systemworks and there seems to be alot running. What i would like to know is, which ones can i kill? How do i know if it needs to be running or not. The same with the start up processes. I would like to kill some of these so my computer starts up quicker but i do not know which i need.

Which processes should i kill?symatec

Unnecessary start up programs 鈥?Various programs that you install add some extra programs to the system startup which may not be necessary and will slow down startup and general operation. To remove these programs;

1. Click the start button and select run

2. Enter Msconfig and click ok

3. Select the startup tab

4. Uncheck any programs that are not needed according to the list provided by Raymond in the link below.

5. When the system restarts, the unchecked programs will no longer be started.

http://www.raymond.cc/blog/archives/2007...

From http://www.ask-the-computer-doc.com/boos...

Which processes should i kill?vista

Msconfig is best option to stop autorun program

but still there are many autorun program in computer(Such as virus) which cann't stop by msconfig.

So stop all process from computer except explorer.exe which is running on user account in task manager.