Taskbar help

I'm sorry if this seems like  n00bish request.. but, I am an experienced Windows XP Pro user, but I have always had trouble with the taskbar. And recently, it's been acting up. I have tried a few different ways to remedy the situation, but to no avail.

http://i19.photobucket.com/albums/b172/nekoaitsu/taskbarhelp.jpg

I need to get rid of the extra sections/bars, and I can't figure out how. Please help. And, I'm sorry if this is just my own stupidity ^^";