Hi there! (again!)
I just bought a 480W Antec Trueblue PSU - which has 2 fans - one on the top, like this:
http://www.sharkyextreme.com/img/200.../antec_psu.jpg
I have read the manual (yay!) and it says nothing about which way to install it. I don't know if the fan is supposed to be 'on top' and stick out the top of the case (in that case I would need to pull out the Dremel)... or is supposed to be put upside down so that the fan blows on to the motherboard below. The manual says nothing about this. Maybe it's just that stupid a question. But I don't know.
Could someone please clear this up for me?