Hey Carl,
Shirley is right about the Antec. I've been using an Antec Phantom, 350 Watt, for about 1.5 years, and it is a totally silent power source, with fins only, no fan - about $70-100. I also use an aftermarket CPU fan that has large copper fins in a circular design, and again, as Shirley says, it has a rheostat to adjust the speed - about $30-40. Both are easy to install, some tweeking may be required for the CPU fan, or it may go right in... I can keep this thing nearly totally silent and the cpu temperature cool enough. There are programs for sale that continuously measure the CPU temp, so you can adjust accordingly. There is one that you can use free of charge for a month, which is all you will need it once you're up an running, so you can find the correct speed to keep your CPU cool enough. There are other much more expensive silen options to keep your CPU cool, such as liquid cooled systems, but I've never used one of these. I don't use high demand video cards, so I can't help there.
Good luck,
Doug