OK - the pictures are working again, now....
FYI - you don't need to use exactly the same fan that I did, however, pay attention to the specs of the original, and the proposed replacement. You want to have significantly lower rotation speed, while still getting higher CFM and higher pressure.
ALSO - (at least on "my" motherboard revision) the other power connectors on the motherboard were NOT supplying fan voltage - so I bought a splitter cable for this, so that I got TWO power connectors from the original fan connector. That way, I ran the new fan for the heatsink, as well as an additional fan to extract heat out the back of the unit. The case already was built for this extractor fan, but they chose not to install one - was very easy for me to put one in - was the same size as the heatsink fan...