The chart re-implementation is still ongoing. Be aware that this build is not an official productive version but only provided for testing and evaluation purposes. It still may contain bugs and incompatibilites. So please don't use it for regular work. If you create documents with this version do not distribute or keep them as they might not be correctly loaded in official builds. As this is a developer snapshot build it should not conflict with your normal OpenOffice.org version on your computer. Please don't use the 'online update' feature as this will not work with the developer snapshot.
Just extract and start:
Just exrtact the zip file to YOURDIRECTORY and start YOURDIRECTORY\ooo_chart2_milestone11_windows\program\soffice.exe
Just exrtact the tar.gz file to YOURDIRECTORY and start YOURDIRECTORY/ooo_chart2_milestone11_linux_intel/program/soffice
Just exrtact the tgz file to YOURDIRECTORY and start YOURDIRECTORY/ooo_chart2_milestone11_solaris_sparc/program/soffice
Just remove the directory to which you extracted.