Program Files\Dark Basic Software\Dark Basic Professional\Video
^ There are tutorials in that folder that show you how to #include and all that.
In DBPro all you have to do is click the Setting tab on the right panel. Then up top where it says Browse; just click that and select the file you want to use.
You'll now have 2 programming windows. You can toggle between them by clicking the dropdown box in the -top center- of the IDE.
I think whatever you put in either or will work as long as you included them as described.
Specs[1 GiG Athlon,Geforce Ti4, 128mb]