Since I know very little about LISP, I was reading in my A2K6 help file for the load function. I found a LISP routine for going straight from AutoCAD to the same location in Explorer. All of the routines that I have found in the past to do just this, appeared to have problems if the file path included comma's. This one so far has worked with comma's. Just thought I would pass it along.
This is what I found in the help file, (A2K6) under "load AutoLISP function":
(defun c:custfiles ()
(command "shell"
(strcat "explorer \"" (getvar "roamablerootprefix") "\"")
)
(princ)
)
I changed mine to:
(defun c:EP ()
(command "shell"
(strcat "explorer \"" (getvar "DWGPREFIX") "\"")
)
(princ)
)
Hope this helps some one.