InfoPath Dev

I just manually typed it in InfoPath.

I am using sharepoint. but I also do not know how to find the data connection library as I am barely new and trying to understand it.

that is right so when the user select "B" from the dropdown then new dropdown should show choice of "C or D" but I don't know how to do it..

Hi all! I'm pretty new/confuse how to do the following : I need to create a dropdown list : Group option show A and B then if the user selected B another option should show like C or D. any help I know its quiet simple not I'm not able to do it. any help will be highly appreciate it! -Saj