GeoIP?

Hello, I am in creation of a WaveLAN service in Germany and my HTML-Form is DoS'ed be idiots outside of Germany. Can someone tell me how to prevent peoples, filling out the form without being in Germany? Note: I do not want to load the whole GeoIP Database in my scripts. Or is there a Free Online-Service which can do this? If not, it would be a nice project to start and could work like the RBL. Thanks, Greetings and nice Day/Evening Michelle Konzack Systemadministrator 24V Electronic Engineer Tamay Dogan Network Debian GNU/Linux Consultant -- Linux-User #280138 with the Linux Counter, http://counter.li.org/ ##################### Debian GNU/Linux Consultant ##################### <http://www.tamay-dogan.net/> Michelle Konzack <http://www.can4linux.org/> Apt. 917 <http://www.flexray4linux.org/> 50, rue de Soultz Jabber linux4michelle@jabber.ccc.de 67100 Strasbourg/France IRC #Debian (irc.icq.com) Tel. DE: +49 177 9351947 ICQ #328449886 Tel. FR: +33 6 61925193