Now you can download AxPath.dll (with sources) which works with Ax 3, Ax 4, Ax 2009. Previously it worked only if Ax3 was installed.
Ivan fixed it to work with Ax2009, now I have extended it to probe registry keys for Ax2009, Ax4, Ax3 (in that particular order) and work with the version found first.
If you do not know what AxPath and Tabax are - look at http://axaptapedia.com/AxPath, http://axaptapedia.com/Tabax
AxPath plugin originated by AndyD from http://axforum.info