Time Machine Reset?

Hello, I've had Leopard for about a month now, but just today have I really started delving into the new features (namely Boot Camp and Time Machine). I backed up my drive with Time Machine, partitioned my drive, then wasn't happy, so I wanted out. I didn't know you could just undo the partition in BootCamp Assistant, so I figured Time Machine would do the trick. I Time Machine'd my username I think. Maybe my HD. I should've paid more attention to what I was doing, but it's been a long day, and I wasn't thinking clearly. So after the backup and reboot, Boot Camp was still there, but EVERYTHING on my computer was at it's default settings... I still have my applications, but they all for reset. So all my bookmarks, preference settings, my dock... everything is screwed up. Is there any way to fix this? I didn't think Time Machine would do that, and I'm pretty upset about it... thanks for the help.