Since it is really important to take care of your intimate computer, and it is really a delicate job to do so, I've done a little googling... And I found a nice website that instruct you on how to clean your computer parts.... Here you go!
http://www.computerhope.com/cleaning.htm#07
I hightly recommend cleaning your computer, beware if the computer felt that you are neglecting him... lol
Cheers
