Hi, I have a couple of ideas that might help:
First, if you'd like to see both the Week scale and the Day scale, Right click on the Gantt header and select "Customize Headers". Customize headers for Day scale, and add a Summary header. Then, it should default to "Jan 5 - Jan 11". This gives you a week header above your Day headers.
Alternately, if you only want the Week headers but still want to see / snap to days within that week, you could make Off-Hours visible in the Gantt. This is in the View > Gantt menu. With this on, it's easier to see work periods as part of a larger view.
Hope this helps.
Software Test Pilot
The Omni Group