app store

So I've had success in the past loading SL and then Lion on my hackintosh. When I started everything again from scratch, I encountered several problems. The first was updating to 10.6.8 because of the date issue. (setting the calendar back) My next problem is I'm unable to access the App...

Hello, I know we can do clean ML installs by using Unibeast and creating a new stick. But what about upgrading your current 10.7 installation? Can I use the App Store installation+Chimera at boot up - or will Unibeast do upgrade installations - or do I have to reinstall the entire OS?