Set the Java system variable and add Java to the system path.
Check the JDK system requirements for the BlackBerry environment you are using: http://us.blackberry.com/developers/javaappdev/.
If you have Sybase installed, you can use the existing JDK to set the JAVA_HOME variable: JAVA_HOME=C:\Sybase\UnwiredPlatform\JDK1.6.0_31.
If you have Sybase installed, you can use the existing JDK to set the variable: C:\Sybase\UnwiredPlatform\JDK1.6.0_31\bin.