Minecraft

Bonjour j'ai un IBM ThinKCenter type S51 ou model 8171-WMQ et tous mes driver sont installés (d'ailleurs je viens des installés (et j'ai redémarré mon pc)) et tous content je me dis que j'ai bien travailler (car je ne savais pas comment avant et je n'ai pas trouver de guide) donc je vais sur minecraft.net et voici le message d'erreur qu'il me sort:

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 13-06-03 19:49

-- System Details --
Details:
Minecraft Version: 1.5.2
Operating System: Windows XP (x86) version 5.1
Java Version: 1.7.0_21, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 769643720 bytes (733 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 3 total; -Xbootclasspath/a:C:\PROGRA~1\Java\jre7\lib\deploy.jar;C:\PROGRA~1\Java\jre7\lib\javaws.jar;C:\PROGRA~1\Java\jre7\lib\plugin.jar -Xmx1g -Xms1024M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
LWJGL: 2.4.2
OpenGL: ~~ERROR~~ NullPointerException: null
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null[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:235)
at avv.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:507)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT bc187d49 ----------

Pouvez-vous me dire se que je doit faire pour pouvoir jouer? Un grand merci!!!