For some reason the admin won't let me select any countries - I can't scroll through them

Instead, can I confirm that if I go to Zone rates and simply enter GB for zone 1 and then copy/paste all international country codes into zone 2 (will keep the postage rates the same for all non-uk orders) this will be fine? Basically, I wont be setting up new zones through the Locations/Taxes section but just setting them up countrywise in the Shipping Modules/Zone Rates area.

Also is there a list somewhere I could easily "grab" all the codes rather than copying/pasting each individually