The RAM that gotolam linked to at:
is indeed 172-pin Micro-DIMM RAM.
I don’t know myself if it will work, but I’m likely going to try it in a week or so. I just thought I should let you know that it is not 184pin SoDIMM, and the link worked for me. ^_^
Oh, and the price has risen slightly. $55.62 before shipping. Still not bad, assuming it works. Good luck!