Tandemrotor:
What makes you so sure that BA will be 'desperate' for 777 drivers. When the 787 comes online in 2013, there will be at least, at a guess, 50-100 unfrozen bids for the 777. As I have said above, it is highly unlikely that BA will recruit directly onto the 777 in the short-medium term.
As for the new 767 campaign, I can't see many applicants coming forward as surely most would have applied at the end of last year? Some have been offered the 744, too. I'm guessing these new slots could be for 2012 when some more 767 FOs leave for 744/777.
Cheers