Activism Network - Internationalization

Currently the Activism Network software will only work well for users in Canada and the US (or other countries that are really really small).

The major limitation that is stopping its productive use in English-speaking countries is that I'd need national databases of zip/postal codes that would include a longitude and latitude.

For instance, I would love to expand this software to work in the UK, Ireland, Australia, New Zealand, and perhaps the Phillipines (note: the Phillipines has one of the highest rates of use, however it also might require bilingual support) - however I need to get postal code databases for these countries. Ideally I'd like to get free databases, but if they can be obtained for a small cost (<$100) then I might be willing to do it, especially if one or more activists in those countries expressed interest in using the software.

If I got these databases, I'd do some work customizing things like the phone entry data format - to support international phone numbers.

The other major limitation to internationalization is going beyond English - that will take more significant work.

If you know of any free/cheap databases of postal codes and longitude/latitude (for English speaking countries outside the US/Canada) - let me know!