How do i know which english exam to take?Please Help!!!!

[Darkangel]

Hi there,
I would really appreciate all the help i can get.
I tried to book an english test for settlement (SETM) and i was told i have to know which exam to take.
My problem is that home office stated many exams (KET), (PET) but how do i know which one i'm suppose to take? Should i call them and ask? or is there a place to enquire about this? or does it not matter? i'm so confused please help..
Thanks

[pinkpop]

Trinity college grade 5 B1. Google it and you can see all details about this test. Very easy one.

[Darkangel]

Thanks a lot for your reply...is trinity college the only place to take the exam? If not do you have any other place this can be done?
Thanks