WOW on laptopFollow

I have a fujitsu-siemens laptop (amilo D) on which I play WoW. On this as most laptops, the numlock digits are on top of the orinary letters to save room. But I cant seem to use the digits in WOW as actionbar hotkeys , so I have to use the digits on top of the keyboard, which is more difficult. The num lock is working fine in word and so, but not in-game. Any of you know how to solve it? will be much appreciated!