InfoPath Dev

 [quote user="Anuma"]If you want to modify the Main data source, then open XSD file in text editor and do your modifications.[/quote]   And where can i find this? Is the file that is inside the xsn file since this xsn file if like a cab file and have file inside?  

Hy there i'm new in the infopaht I have a scenario, that i will try to explain.   I've created a form based on a xsd as a datasource. Now i would like to pre fill the form so that the user can change only a few things on it. My problem/question is this. How can i change the datasource on the form so that i can populate the form ...