Error im getting on compile is:

Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre1.6.0_03\lib\tools.jar
Buildfile: build.xml

compile:
     [echo] Compiling 1.4 compatible slave files
    [javac] Compiling 63 source files to C:\DRFTPD\classes


Path to JAVA_HOME is:
C:\Program Files\Java\jdk1.6.0_03\


Path to ANT_HOME is: (bin and lib are copied there)
C:\DRFTPD\ANT\


im using the SVN version.
Im using Java - jdk-6u3-windows-i586-p.exe  installed to C:\Program Files\Java\jdk1.6.0_03

it appears that Jave is looking in JRE1.6....... instead of jdk1.6...... 
how do i change this?