it has been an eventful few days since england arrived in the carribbean .
despite the sacking of paul downton , cook is focused on test series .
england take on the west indies in the first of three tests from monday .
pietersen hit an aggressive 170 for surrey against oxford mccu .
james anderson will make his 100th test outing on monday .
jonathan trott returns to the test line-up after the ashes series .