Setting check/money order for US only

[marketeria2008]

Hello:

Using 1.3.8a
database backup
site backup
quickbooks import QBI
EZ pages settings
easy populate

I am still setting up my cart and would greatly appreciate any help you would be able to give in assistance with this. I am wanting to set the check / money order module so it only shows for US purchases only. If there is not a way to do this , where would I find the areas that I would need in checkout to add a statement behind where checks / money order show up on the checkout pages.

Thank you
Marketeria2008