"It has some issues," writes Mark above, "but works pretty well for what it was designed for. The most important things for me were the quick-diff and seeing which files were modified."
I installed the plugin above and then saw AccuRev represented in the place I would expect:
If you'd like to have AccuRev CVS support in NetBeans IDE, you need to support the issue by voting for it here! Or check out the sources above and contribute to them yourself!