Framesets:
Frames are a bit hard to get the hang of in Dreamweaver. You get mysterious "Untitled...html" pages all the time and may need to reset your linking to the pages at times.
To make a frameset, you have some options:
a. Select Frames from the object menu and choose to insert a layout you want.
b. Select Insert>Frames>...
or
c. Choose View>Visual Aids>Frame Borders and drag a frame out from the
edge of the page.
Making a Frameset:
1. Open a new page in Dreamweaver.
2. and choose a method from above: a, b, or c.