Believe me, I think we all know exactly what point you are at...we've all been there...and some of us still are. However; I do have to agree with Rayanne...if your wife says she cares...don't jump to the assumption that she doesn't...take her at her word, afterall...unless you can crawl into her head you don't know for sure that she doesn't care. I know there are times I'd just love to be able to crawl inside my LDH's head to find out just what the heck he's thinking...but I cant, so I have to take what he says at face value.
I'm sure since you've found this board that you've been reading many of the posts out there...there's a lot to be learned from reading them. The main thing I've learned so far though is that you can't concentrate on working on her, or changing her...work on yourself, take a look at your own behavior, modify some of your behavior....her behavior towards you may change as a result. Also, if you haven't already read SSM, definitely pick up a copy of it and read it (I suggest more than once as I've picked up different things each time I read it). It's very easy reading and I think you will find many things you can relate to in it.