Unable to run Sample JavaFx Program in Eclipse 3.4

I am Getting this error while running a sample program.
"cannot access javafx.lang.Builtins class file for javafx.lang.Builtins not found Main.fx".
I am using JRE - jdk1.5_06.
Please help me out.
Regards,
Naveeen

Perhaps something here will help:
http://www.myeclipseide.com/PNphpBB2-viewtopic-t-24343.html
If not, you might want to post in the Developer forum. You'll be more likely to have someone familiar with Eclipse see your post there.
Regards.

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