Thanks for your reply Clay.
I understand when you say about views, sections, conditional formatting, etc.
The point which I am trying to convey is how do I pull a particular row of
data from sharepoint list and then attach them to different controls on my
form.

I'll explain :
-I have a SharePoint Form Library, "Policies".
-I have a InfoPath form with 3 views (v1, v2 and v3).
-On v1, I have 2 option button: "New" and "Existing". New takes the process
to fillout and submit the form. This works fine.
-On v2 and v3, I have all the other controls in different sections.
-"Existing" displays a dropdownwhich is attached to "FormID" column in
"Policies" Form Library and displays all the FormIDs.
-Now, First when I open the InfoPath form all controls are blank except few
which are prepoluated from AD (Name, Phone,etc.)
-Now I select "Existing" option and then a "FormID" from the dropdown.
-Now here is the my question?????
-At this step, I need to fetch the data from SharePoint for the FormID which
I selected in the dropdown. How do I do this?
-Then after fetching the data, how do I display them on the controls in my
form.

just tooo long, I know. But hope it makes sense now.
Any idea how to achieve this. I would accept any suggestions!!!
I am fiddling around with some C# coding but no success.
Thanks,
Zullu.