I can't play Minecraft D=

Squippit, Thu Oct 06 2011, 11:48PM

Once upon a time my computer wasn't connecting to the internet and couldn't be fixed without a complete system wipe. So I wiped it. And then Minecraft didn't work after everything I had was reinstalled. Problem is, I'm not this computer's original owner, and don't know what my older brother (aforesaid original owner) did to the computer that made it run the games I like (MC,RS,RoM,LoL,etc.). So now whenever I attempt to play run Minecraft on the website or downloaded version, I get this:

Bad video card drivers!
-----------------------

Minecraft was unable to start because it failed to find an accelerated OpenGL mode.
This can usually be fixed by updating the video card drivers.



--- BEGIN ERROR REPORT 7fe0271 --------
Generated 10/6/11 6:38 PM

Minecraft: Minecraft Beta 1.8.1
OS: Windows XP (x86) version 5.1
Java: 1.6.0_27, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
[failed to get system properties (java.lang.NullPointerException)]

org.lwjgl.LWJGLException: Pixel format not accelerated
at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelFormat(Native Method)
at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat(WindowsPeerInfo.java:52)
at org.lwjgl.opengl.WindowsDisplay.createWindow(WindowsDisplay.java:185)
at org.lwjgl.opengl.Display.createWindow(Display.java:311)
at org.lwjgl.opengl.Display.create(Display.java:856)
at org.lwjgl.opengl.Display.create(Display.java:784)
at org.lwjgl.opengl.Display.create(Display.java:765)
at net.minecraft.client.Minecraft.a(SourceFile:233)
at net.minecraft.client.Minecraft.run(SourceFile:629)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT a56fa10b ----------

tl;dr version:

My computer won't run Minecraft. Help me fix it please?