Why I can't use javac? and why my program doesn't pop up cmd window?

I have 2 questions here:
1) I try to compile my HelloWorld.java using command prompt,
javac HelloWorld.java
But it won't work; by right it should create a HelloWorld.class. When I go to Configure/Options/JDK Profile, it is already showing JDK version 1.6.0_07. My environment variables show User variables and System variables with C:\Program Files\Java\jdk1.6.0_07\bin. This is where my JDK is stored, but I don't know why I can't use javac. It keep saying
'javac' is not recognized as an internal or external command, operable program or batch file
2) Why is it when I run my java script using JCreator, the print out appear in the box below in JCreator and not in command prompt? How can I make it pop up on command prompt window?

Things tend to move fasterYep... until something goes wrong... then you're completely stuffed, because you have no idea what's actually happening, because the idjit IDE is hiding all the gory details... it doesn't even tell you what it's doing, let alone how it's doing it, or what to do when it fails.
Another argument for the command line is that it's simple. There are 16 distinct dialogues involved in adding a new jar to a library in jBuilder... There may well be less than 16 characters in the equivalent edition to the equivalent build command line. That's an extreme case, I admit, but it goes to disprove the notion that IDE's are simpler for noobs.
Also, it's easier to get help on command line usage... because it's all text based you can just copy & paste the problematic command and it's output, and the eggspurts (tm) can do likewise with a response... and there are limited number of command lines out there... and *nix, windows, and mac cover maybe 99.5% of java users... and the eggspurts are likely to know all three (colectively if not as individuals) fairly well, because they deal with them all day every day.
My belief is that noob's are better off at the command line until such time as they need (not just want to play with) a visual debugger... at which time its time to download netbeans and eclipse, and see which one suits you better... if you have money to splurge I'd also evaluate intelliJ... But avoid jBuilder, 2008 is total carp! The FREE eclipse is (IMHO) "nicer to use", and it has a LOT less bugs.
Cheers. Keith.

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