Kde 4.10.0 and numpad shortcut

[yellowhat]

Hi all,
I have just emerged kde (kdebase-startkde) all is working fine but I have a little problem with shortcut.
I would like to resize the windows on bottom/up-left/right using a keyboard shortcut by pressing Windows Key + 1/3/7/9 of numpad just like compiz grid plugin.
But when I press this combination in settings-shortcut-kwin it shows Meta+BlocNum, if I press this combination the window resize but with every number of numpad, there is no distinction between number.
My keyboard is a logitech MX5500.
Any ideas?

Thanks
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST