I'm pretty sure my only solution to this problem is to buy a different tenkeyless keyboard... I have the HP KU-0901 and a separate USB 10-key. I want to be able to use both at the same time, with the keyboard for regular typing and the 10-key for--you guessed it--10-key. But if I toggle on Num Lock, the right half of the keyboard becomes a virtual 10-key, so I can't have full keyboard and 10-key working at the same time. If anyone has a solution, I'd appreciate it.