Cannot install kext using 'OSX86Tools' in OS X 10.6.2

[apple_hacker]

I've successfully installed and running Snow Leopard from Hazard 10.6.2 Intel-Amd DVD but I've a new problem. When I try to install any kext using OSX86 Tools I can't do it because all kexts appears grayed out as one I showed in the screenshot below, but I can manually install the same kexts using terminal ... Is OSX86 Tools not supported in OS X 10.6.2 ????

 

Any suggesstions ????

 

 

 

 

System Spec.

GA-G31M-ES2L(Mobo)

Intel PentiumD 820 (CPU)

2GB 667MHz DDR2 (Transcend)

Seagate Baracuda 250GB SATA

RTL 8139C PCI Ethernet Card