InfoPath Dev

HI , i'm using infopath 2010 with sharepoint liste template , i want to populate my drop down list from a custom liste sharepoint based on such criteria ,for example : i have a custom liste wich has two columns "Key" and "Value" i want to pouplate the drop down liste when Key ="Country" so in my drop downs i get all country , but i have another probléme the countries are stored in sharepoint list like this : Tunis , France , Country3 , another country 4 , Britagne ,USA, etc .... its possible to format data to populate the drop down liste with this countries ?? if yes how can i get this worked ? ( i can not use the code editor , i should only get this work with template type sharepoint liste ) Thanks

You can apply filters on specific column value to get it done. And can you be more specific ??

Thanks Karim for your replay , if i have countries stored in sharepoint list column like this : country1, country 2 , country 3 , etc how can i pupluate drop down liste with this countries ? Thanks