Then read "In plain English, how do I speed up a slow computer?" http://forums.cnet.com/5208-10149_102-0.html?forumID=7&threadID=303211&messageID=2824250&tag=forums06;forum-threads
And finish with " Why does my PC take so long to shut down? How to fix it?" at http://forums.cnet.com/5208-10149_102-0.html?forumID=7&threadID=305686&messageID=2839789#2839789
With those 3 prior discussions you learn it all.
How can you find out what's running in the background of your laptop?
How to know if you need it?
How to get rid of it if you don't?