Here is site where you can check what each process does
Also there is something else you should seriously consider, and that is Services. Many of them are useless and can be disabled. Check Control Panel -> Administrative Tools -> Services
Each service has a brief description of what it does, but there are many other website that explain more and tell you what can and what shouldnt be disabled.
This one looks ok but I didnt spend ages looking =)
One other final thing, and this is quite important. When you install some programs they add things like Services and Process that start up when you PC boots. Often you will get an icon in the bottom right. If you want to get rid of the filthy bastards then do this:
Go to Start -> Run then type in regedit and press enter. Then, navigate to HKEY_LOCAL_MACHINE -> Software -> Microsoft -> Windows -> CurrentVersion -> Run.
You will see all the filthy backdoor bastards that boot up when you PC starts up. Before you go deleting them all, I would suggest that you first of all select the Run key, and go to File -> Export and save a backup on your desktop. You can just run this file to add them all again if you change your mind. Check what each one is for before you delete it like, but if you do all this then reboot I will tell you, your pc will zoom
And one other thing, if you have a anti virus program installed then why dont you consider this: Keep it disabled, and only enable it to quickly check any dodgy files that you download. I hate anti virus programs with a passion. They are so wasteful. They sit there scanning every single file your PC accesses, even if its been scanned a million times already. Damn peice of shit useless
