installing Netbeans 6.0.1 on my windows computer, I find this error:

Even if I my enviroment variables seems to be ok, when executing:

I rebooted my system, but the error persists. Does anybody know why??
Thans in advance
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If you are certain that you have a JDK installed (and not a JRE), you can specify the location of the JDK on the commandline when starting the installer (as mentioned in the error message you get).
These FAQ entries might also help you:
http://wiki.netbeans.org/FaqInstallJavahome
http://wiki.netbeans.org/FaqSuitableJvmNotFound