Good Morning

I am trying to set a comparison of shipping costs
possibly using a pick list and/or an array but I cant get my head
around all the different option

I want to be able to choose a county and this gives me the zones for
each carrier and from this it would calclate the
shipping cost for each carrier

I have created apicklist of every county in the world so I though
I next need to give each country a zone number whch if defferent for
every carrier

so if a choose Ireland I need the rules to show each code

ie

CARRIER          =                        TNT       CITY
UPS              DHL
-------------------------------------------------------------------------------------------------------
IRELAND                                      T1           C3
U6               D8

Any help would be must appreciated
Regards Clive

clive.churchward@googlemail.com