Oh ok, I would have assumed that if you log in to GFWL with the gmail account, it would log in since you used a gmail acocunt.
This is through the GFWL client which pops up when you load DiRT 3.
Once it logs in a registers, there is a button within the GFWL console which should let you revoke the DiRT 3 key.
The key should still be associated with your gmail account when you log in to GFWL.
You deleted your gmail account without revoking the product key for DiRT 3 and you only just bought it today?!
I don't see any possible way you could redeem your code then.
At least you didn't pay full price for the game!
As I mentioned, you will have to log in with the previous gmail account and then revoke to get your DiRT 3 key back, then you can get it registered with the new account.
i reinstalled the os and installed live separately. now the damned thing says that this was already used to register another account. i think its talking about the gmail account which i used before, but i deleted that account as the game didint show up then. do you have any email where i can get some support and rant a little?