Dont let In-laws use your stuff!!!!!!!!!

Hey everyone, not sure if I should post this here. I just joined this forum recently because apparently my warranty ran out or something like that.  I have a Inspiron 1501 and I have a small problem.  I let a relative use my computer and somehow i got it back and the taskbar/start menu is no longer on the bottom of my desktop, its now on the right side and I have no idea how in the heck I can get it back to the bottom of my screen... It seems like I've tried to do everything possible in the control panel, properties of the taskbar, desktop and everything else but I'm just not figuring it out.  I'm sure It's an easy fix I'm just not seeing it.  So if anyone can help me out on this it would be greatly appreciated, thanks a lot.

 Signed,

First your in-laws mess up your life, and now they mess up your computer... :(