its not possible to get approval with sub domain try to create new website and write original articles there and then apply friends ...
Then why don't you email or call them and ask?? #1 They hate crappy sites #2 They hate spammers/hackers, and publishers trying to thwart the Adsense system #3 They hate Darwin award winners
He's right. Anyway, if you want to get approved easily, then you have to produce a blog (at least) that is 3 months old and that has quality contents. Then apply again. By this time, you will surely be get accepted