geotargeting scripts

[jackdack]

Hi
I'm looking for a geotargeting tool to present different information (ads, affiliate data, some segments of text etc) to different regions of the world (particularly UK & US). The script needs to work for Amazon affiliate code.
The site has around 1000 pages (& increasing) made up of about 50 topics, so the script will provide many targeted results.

Please advise if you have any recommendations (or warnings) about any of the tools available.

Thank you

[dingloo]

Have you tried maxmind? They have a open source version as well as a premium version.

We use that in our adserver that runs on a OpenX version that we have hosted on our servers and it serves the purpose.