[How?] Geo-target people with ads easily

hey,
okay im buying some advertising from someone for a cpa offer....

however they get traffic from the usa canada and the uk (as well as other countries) but i wanted to know how i would go about geo-targetting the user so that they get shown the correct banner for their country....

now this is all on their server (i do have a server too)... but dont want to be giving them masses of code to add a simple banner image and link....

any ideas people your help is most appreciated

 

Download ip2nation MySql database it's free, and build a php script to do the geotargeting

Code:

http://www.ip2nation.com/

 

get phpadsnew it has a whole system built in
if im right i think it doesnt use that name now tho something like openads but searching phpadsnew will bring it up anyway

Its most best advanced system thats open source i have seen and includes geotargeting inside, you just got to feed it with some ip data that can be downloaded free also.

 

thanks so much harro..... off to make my millions thanks to your help

 

Get Openx ads (like Harro said) from openx.org and get latest geoip database from maxmind and you are ready to go.

 

screw that, get gump. ;]