Child Pages/Drop Down Menu Help

This has been mentioned over and over again, but I figured I would just ask it myself.

My apologies if this confuses anyone.

My site page layout looks like this:

HOME
-PAGE 1
–Sub Page 1
—1a
—1b
—1c
–Sub Page 2
—2a
-PAGE 2
-PAGE 3

Question 1:
How do I get my drop down menu to not show any of my “1a, 1b and 1c” pages? Do I manually have to edit my php to not show certain page numbers every time I create one?

Question 2:
If I were to view “1a”, the top of my page would display a bar of the page location. Example: Home >> Current Page
I would like that bar to show the actual location of the page, so I would need something like this: Home >> Page 1 >> Sub Page 2 >> Current Page.

Would anyone be able to help me?

Thanks so much,
Andrew.