Hmmm....fans....go for the Zalman Flower...have one at home as its as close to silent as you can get. You will see why when you have a look at a pic of it.
PSU....quietpc.com Got one yesterday for work and you can hardly hear it.
CPUs running without fans....Via have released their x86 processors...the 533 and 800 MHz ones can be used without a fan. And they are dirt cheap
