F1 to Clear in 2006?

There was a neat of way of adding a line to the "Accelerators" section of the .mns file in Acad '00-'04 to change the F1 key from Help to Clear (which I did and loved.). Is there any way of doing it in '06 since doesn't have a .mns file? It is not one of the choices in the CUI dialog. TIA Joe