The keyboard that I use now is none other that Apple wireless keyboard and I must say I really love it, despite the fact my brother says it's complete trash etc.
Now why? Because for 7 and 8 groups I use F2 and F3 keys respectively. Those keys are so close to numeric keys that it's very very practical since I'm used to it.
Now the reason why I ask for your help is because I don't know any similar keyboards to this one and using Apple keyboard under Windows will work, but obviously cause troubles.
Here is the image of how it exactly look like.