OBGE provides many fantastic graphical options, but it is also slightly buggy and fairly tricky to get working correctly. I'm not trying to be mean, but if you are having trouble finding the needed information based upon that prior post, then pursuing OBGE might not be the best idea
. I don't know of anything other than OBGE which can provide SSAO.
Another great place to get started with graphical improvements is http://devnull.sweetdanger.net/obliviontextureoverhaul.html. Slightly out of date with regard to a couple of newer options, but I don't think there's yet any comprehensive replacement list.