Rebbie,
Please read the Stages of Change Model post. You'll see that relapse is quite common, and an opportunity to learn.
As for the rage you are feeling, well, I went through a horrible time my first quit too. Perhaps you might want to talk to your doctor? Welbutrin is an antidepressant. Used under the trade name Zyban, it is also a smoke cessation aide. It may help those feelings. (Personally, I could only take 1/2 the dose; the full dose made me anxious, but, I'm very very sensitive to drugs.)
Another smoke cessation aide, that I'm using now, (and find more helpful), is Chantix. It blocks the nicotine receptors in the brain. It is *not* an anti depressant. I felt no desire to smoke with it at all. For me, it's a miracle drug, honestly!
Exercise and other behavioral changes will definately help your quit. Drink LOTS of water to help flush the toxins out of your body. Join in on the daily check in thread, to talk about your ups and downs. Checking in, making yourself accountable to someone -- anyone -- helps. And please read the other posts on this forum. There is a LOT of good, helpful information on this forum. The stages of grief post is one that *may* apply to you, considering the rage you mention.
I wish you the best, and know that we are here to support you and your quit!
Peace!