After undergoing some research I discovered that the scancodes for the primary enter key and num keypad enter key put out different scancodes. The keypad keys have a "prefix" byte in the scancode. The scancode utility I was using, reported them as the same. Therefore I corrected my keyboard hack to control the primary enter key.
Thanks for your reply.
Scott
P.S. Just curious, are you planning on coming out with an Arcade Jukebox 8? If so, what enhancements will you add?