Thank you all for your replies. They really helped me to feel that I'm not evil, but that this anger is normal for the condition. I mean, I really do at times think some awful, violent, morbid things, fantasizing about they way I would want to hurt people, and then I tell myself that it's stupid, I would never do that because it's wrong, I would end up in prison and throw away everything good in my life, and I would never forgive myself. So, I know I would never act on my thoughts; I'm just not sure if they're a release of my anger, or if they're making my feelings worse, and I wish I knew how to stop them. I think I need a method of thought control, because instead of being able to push the thoughts away, I seem to stew in them.

Innerzone: I loved your reply, and thank you for bringing that up. It's even Hollywood! Last night I watched "Shutter Island", in which the main character's wife had been "bipolar", and she killed their 3 children! I mean, come on! They're just playing into the stigma of the mentally ill, and making the mass of uneducated movie-watching people think that bipolars are that dangerous and twisted. And yes, I've heard that before, about bipolars lying and stealing, as though all of us are like that. That's part of what bothers me about accepting this diagnosis, the ignorance of people and being ostracized and misunderstood. I work in a job that requires a lot of trust in me (I had no problem with the background check-I've never been in trouble), but now that people know I'm bipolar I feel like they'll be suspicious of me and think I'm a risk, and not want me there.

QueenAccountant: No, I can't get time off work, because a few months ago I was out for 3 months with a back problem, and used up all my time. And, I only get a half hour for lunch, so I can't really go anywhere. I just eat at my desk, then go outside for a few minutes to smoke.
I was on the regular Seroquel at first, and I think you're right, it was working alot better than the XR, and I actually felt happy during the day. The main problem was my heart racing about an hour after I took it, which is why they switched me to the XR. I'm on 200 mg. Maybe I just need the dosage upped?

CanineSerenity: I try to be positive and think that things will change eventually, but when nothing has changed for 4 years, it's hard to belive they ever will.

Ascension: Thanks for helping me feel that I'm not alone. I did feel better yesterday, and only felt angry for an hour or two. The problem is, when I'm in that all-day agry/hatred feeling, the thoughts aren't "fleeting," but rather persist all day.

BlackPup: I know logically that a job and a house are good things, and when I'm feeling good my #1 priority is making sure I keep both. But, when I'm feeling bad, there are times when I just don't care anymore and want to give up. I just want to sell everything I own and go back to living in an efficiency apartment. Then, I could live on a low-paying job, and it wouldn't matter if I didn't like it, I could always get a different one. I know logically that I would regret it and hate myself for losing the house, but I can't help the way I feel, that I want to just throw it all away. Material things seem like a burden that are keeping me trapped. I just want life to be simpler, but I know it would come at the expense of losing everything I've worked so hard for.

Once again, thank you all for your responses, to help me sort out some of this madness jumping around in my brain. I will definitely tell my doctor about it, and maybe an adjustment to meds will help.