Today, after waiting 2 month until my notebook gets back to me (to the HP repair center Switzerland: you’re a bunch of stupid idiots!) I could finally install Hackintosh. I used iATKOS v7 and it works quite good. You need to select two drivers during the installation:

1
2
Voodoo PS/2 Drivers
ATI HD

HDX18 use a NVidia GeForce 9600GT GPU - and yes you need to select ATI HD drivers. The wireless card does not work (Intel 5100 chipset) but I’ll try to setup a bluetooth connection to my iPhone…

EDIT1:
Thanks to this blog my keyboard works better now:

I found with my Hackintosh, and then read elsewhere, that one drawback is that keyboard shortcuts don’t work. It turned out to be an easy fix. Just go into System Preferences and select Keyboard & Mouse ->Keyboard -> Modifier Keys… Then change the selection for “Control Key” from “Control Key” to “Command”. It should look like this: