Can't get the appstore working

Dear fellow Hackintosh-people,

Yesterday I installed OS X 10.7.2, and I love it. It's fast, it's pretty. Just wauw :-) Everything works right now; except for one, rather important, thing. The Appstore. When I try to buy an App, it keeps telling me "The device or computer can't be verified".

What I've done so far:
Added the Ethernet-buildin flag in Chameleon boot plist in /Extra/org.chameleon.Boot.plist
<key>PCIRootUID</key>
<string>0</string>
string added...

I really do not know how to proceed... I may have the wrong .plist, I really don't know. I appreciate any help :-)

By the way, I'm running iAtkos L2.