iAtkos V7 trouble

[phoenix]

Hi,

First of all, i'm new to this forum.
After a lot of research on the internet about apple OS i finaly decided to give it a try and install it on my computer.

First i tried to install it in windows 7 using vmware.
This working nicely, and didn't have any trouble.
Now, I made a bootable Thumbdrive (16Gb ) with the OS installer on it.
It boots fine, no problems at all
I had made a separate Partition just for OSX, and wanted to make dual boot later.
But when i press install, it starts to install, but in a while, my dvd player opens and closes.
at 15 / 20 % it gives me the following message :
"Installer could not validate the contents of the 10.5.7.intel packing"

I've searched the whole internet but i can't find any articles related to this problem, or how to solve it.
I've read it is possible to install OSX from a thumbdrive, but mine just keep searching for a dvd?
Computer specs :
mainboard : Asus Striker Extreme
CPU : Q6600
Memory : 4Gb OCZ
Graphics Card : Ati Radeon HD4890
Hdd : 320 Gb Seagate Barracuda
: 1.5 Tb Seagate Barracuda
Soundcard :Sounblaster X-FI Fatal1ty edition

I hope someone can help.
Greetings, Chris