I will put the crash report here is it will help.
2013-04-15 22:45:49 [iNFO] [ForgeModLoader] Forge Mod Loader version 5.1.8.611 for Minecraft 1.5.1 loading
2013-04-15 22:45:49 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.7.0_13, running on Windows 7:amd64:6.1, installed at E:\Program Files\Java\jre7
2013-04-15 22:45:49 [FINE] [ForgeModLoader] Java classpath at launch is E:\Users\James\Desktop\Documents\Minecraft Stuff\Minecraft.exe
2013-04-15 22:45:49 [FINE] [ForgeModLoader] Java library path at launch is E:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;E:\Program Files\Common Files\Microsoft Shared\Windows Live;E:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Live\Shared;E:\Program Files\Java\jre7\bin;.
2013-04-15 22:45:49 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] All core mods are successfully located
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Discovering coremods
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found a candidate coremod CodeChickenCore-1.5.1.jar
2013-04-15 22:45:49 [WARNING] [ForgeModLoader] Found an un-manifested jar file in the coremods folder : CodeChickenCore-1.5.1.jar, it will be ignored.
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found a candidate coremod Not-Enough-Items-Mod-1.5.1.jar
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Loading coremod Not-Enough-Items-Mod-1.5.1.jar
2013-04-15 22:45:49 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Loaded coremod Not-Enough-Items-Mod-1.5.1.jar
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found library file guava-14.0-rc3.jar present and correct in lib dir
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-148.jar present and correct in lib dir
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found library file deobfuscation_data_1.5.1.zip present and correct in lib dir
2013-04-15 22:45:49 [FINEST] [ForgeModLoader] Found library file scala-library.jar present and correct in lib dir