i downloaded the client a few days ago and havn't managed to get it working, i followed all the instructions, but for some reason i have recieved a java error stating :
Could not find the main class : Main. Program will exit.
ERROR: Failed to run minecraft
Java6="c:\program files <x86>\java\jdk1.6.0_20\bin\java.exe"

i have downloaded what seems to be the latest version of java development kit (jdk) but it still is exactly the same, im not sure if there is something specific i need to download or what, but if you could help me in the comments it would be greatly apprieciated. Thankyou