now it's over. i found two acad.lsp, one in FONTS directory and one in Acad root. i've removed both and now the pgp file works. that was a great help. thank you very much.
As you have found out, lisp definitions override those in the PGP file. This can be of use, because there is only so much you can do with PGP shortcuts. If you need to create a shortcut key that does more than launch a command, you will want to use autolisp and place it in "ACADDOC.LSP" (not "Acad.lsp").
If you're interested, here is a quick example. Don't let the "autolisp" term turn you off. Look at it like scripting.
Add this to your existing (or new if it doesn't exist) file named "ACADDOC.LSP", and make sure it's located in your support file search path. Then close and relaunch AutoCAD. There will be a command named ZD, and it will perform a Zoom Dynamic.