I followed this guide successfully with the kit from ifixit and everything works very nicely. However, I somehow lost the sd card cable, which is not a big deal since my mom doesn't use the sd card slot. I'll put it back next year when I replace the hdd.
If you are planning on doing this, I have a couple of suggestions for you:
* count the cables you disconnect
* before putting the logic board back in, tape all the cables to the sides with some masking or electrical tape and count them again
* try not to touch the lcd, fingerprints are a pain to remove, don't touch the underside of the glass panel either, put it down suction cups down
The guide may look scary, but it's really not that bad.