minecraft demo crashes on startup

Game mode unknowm as I have never been able to play the game, it crashes on startup! Also it does not generated a bug report file for me to attach so it will be in the body below.

Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Users\Jennifer\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-13_19.12.23-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

— BEGIN ERROR REPORT a791bde6 --------
Generated 11/13/12 7:12 PM

• Minecraft Version: 1.4.2
• Operating System: Windows Vista (x86) version 6.0
• Java Version: 1.6.0_34, Sun Microsystems Inc.
• Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
• Memory: 903103600 bytes (861 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
• JVM Flags: 5 total; -Xbootclasspath/a:C:\\PROGRA~2\\Java\\jre6\\lib\\deploy.jar;C:\\PROGRA~2\\Java\\jre6\\lib\\javaws.jar;C:\\PROGRA~2\\Java\\jre6\\lib
  plugin.jar -Xmx1g -Xms1024M -Xmx1g -Xms1024M
• AABB Pool Size: 18835 (1054760 bytes; 1 MB) allocated, 1038 (58128 bytes; 0 MB) used
• LWJGL: 2.4.2
• OpenGL: Intel Cantiga GL version 1.5.0 - Build 7.15.10.1502, Intel
• Is Modded: Probably not
• Type: Client
• Texture Pack: Default
• Profiler Position: N/A (disabled)
• Vec3 Pool Size: 222 (12432 bytes; 0 MB) allocated, 222 (12432 bytes; 0 MB) used
• World MpServer Entities: 10 total; [axc['dekoning421@yahoo.ca'/351, l='MpServer', x=218.50, y=68.62, z=-89.50], og['Bat'/176, l='MpServer', x=280.53, y=17.00, z=-22.25], og['Bat'/117, l='MpServer', x=238.31, y=37.44, z=-52.88], og['Bat'/179, l='MpServer', x=275.75, y=14.19, z=-20.75], og['Bat'/70, l='MpServer', x=177.36, y=19.32, z=-115.25], og['Bat'/116, l='MpServer', x=227.25, y=37.03, z=-48.25], pf['Falling Block'/315, l='MpServer', x=315.50, y=15.49, z=-23.50], pf['Falling Block'/325, l='MpServer', x=321.50, y=15.49, z=-54.50], og['Bat'/182, l='MpServer', x=287.92, y=32.00, z=-17.92], og['Bat'/178, l='MpServer', x=273.30, y=17.41, z=-22.75]]
• World MpServer Players: 1 total; [axc['dekoning421@yahoo.ca'/351, l='MpServer', x=218.50, y=68.62, z=-89.50]]
• World MpServer Chunk Stats: MultiplayerChunkCache: 210
• Forced Entities: 10 total; [og['Bat'/70, l='MpServer', x=177.36, y=19.32, z=-115.25], og['Bat'/117, l='MpServer', x=238.31, y=37.44, z=-52.88], pf['Falling Block'/325, l='MpServer', x=321.50, y=15.49, z=-54.50], og['Bat'/116, l='MpServer', x=227.25, y=37.03, z=-48.25], axc['dekoning421@yahoo.ca'/351, l='MpServer', x=218.50, y=68.62, z=-89.50], og['Bat'/178, l='MpServer', x=273.30, y=17.41, z=-22.75], og['Bat'/179, l='MpServer', x=275.75, y=14.19, z=-20.75], pf['Falling Block'/315, l='MpServer', x=315.50, y=15.49, z=-23.50], og['Bat'/176, l='MpServer', x=280.53, y=17.00, z=-22.25], og['Bat'/182, l='MpServer', x=287.92, y=32.00, z=-17.92]]
• Retry Entities: 0 total; []

java.lang.ArrayIndexOutOfBoundsException: -100
at org.lwjgl.input.Keyboard.getKeyName(Keyboard.java:421)
at arw.a(SourceFile:77)
at ayt.b(SourceFile:755)
at net.minecraft.client.Minecraft.J(SourceFile:604)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)
— END ERROR REPORT 895e8a59 ----------