I know how to create a dialog box resource and then load it into the program to display it, but i don''t know how to create a dialog box on-the-fly and insert controls, all during run-time . :/

Hi

They are created like normal Windows, so you can call the CreateWindowEx function, giving it an predefined Window Class.
Those Classes include all the Standard Controls like Edit Fields Comboboxes and so on.
If you use MSVC, look into the documentation under :
Platformsdk->User Interface Services->Controls->Controls->About Controls

Lars