JDK 1.4 installs but doesn't work in XP

I downloaded the new JDK 1.4 and installed it, but it doesn't work. No application that requires Java works... none of them can find the JVM or the reference to the JRE.
I use to have only the JRE running here and everything was fine, but I want to install Together5, so I removed the JRE to install the full JDK.
And now nothing works... no ENVIRONMENT VARs were set.

Hello cdechery,
When you say: "No application that requires Java works" do you mean that you cannot compile your programs?
What happens if you enter java -version in a DOS command window? Do you get information about the current version or do you get an error message.
I suspect that you get information about the current version. If not, set your PATH environmental variable. See the installation instructions for Windows/XP for details on setting your PATH environmental variable.
The more common problem is that you need to set the CLASSPATH environmental variable to point to your own .class and .jar files (but not the system .class and .jar files).
Use a command line similar to: java -cp .;c:\dev\classes\myapp.jar  myapp to run your application.
What was your previous version of the JRE?
-Merwyn,
Developer Technical Support,
http://www.sun.com/developers/support.

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