NIS 2012 Error

I have a problem with NIS 2012 new install on a windows vista home premium edition. I just purchased this and every time I install it I get error 8506,422 . I have tried all of the suggestions on the forum to fix this but all of the fixes require internet connection and every time I install it it blocks my internet. The only way to get internet access is to uninstall it. Support has been totally useless and no one ever calls me back so now I am here.

I have used the norton remove tool and folowed the instructions on the forum but they all suggest to update update update but how can you update without internet access.

At least I know it can not get a virus since it can not get on the internet.