WLAN, Bluetooth, Sound not working

Sorry, I'm pretty new at the whole Apple scene.
Try and find out what what is?
Where/how should I search for these kernel extensions?

edit: iAtkos 5i or iPC?

Well I found a kext for the wireless, and now it's working great.
http://www.insanelymac.com/forum/index.php?showtopic=51725 ↗

I still haven't had any luck with bluetooth or sound yet.
I'm about to try and find the VoodooHDA.kext and see how that works, I'll post back and let you all know how that works out.

Edit: Found a VoodooHDA.kext.
http://code.google.com/p/voodoohda/ ↗
And sound works now! Thanks for all your help!
Now on to bluetooth...
And the battery isn't recognized/sleep does not work.

try finding out what they are, and search for kexts

search for them on google umm the reason your bluetooth probably doesnt work is because it has to have a broadcom chipset. and if it doesnt i dont know how to get it, but try searching the model of the hardware you want the kext for and just add the word kext to the end and search that in google e.g. Dell Wireless 1397 WLAN Kext

that may work.

For sound try using VoodooHDA.kext, otherwise try to locate a modded AppleHDA suited to your specific laptop if already exists, otherwise you would need to know exact details about the IDT hardware (codec model, codec dump, etc.) and find something close and try to make it work on your own.