In my 1099- DIV form, I have Box 7 (Foreign Tax Paid. Where Shall I enter this amount ?

On the main 1099-DIV screen, be sure to check the box next to "My form has info in more than just these boxes" - it is hiding under box 1b (yes, it really isn't very noticeable).

This will open a lot of boxes, including your box 7.

Careful to go slow and read the entire screen as there are many places like this ...

Here's a screen shot from online Premier.  When you check the box the other boxes will open up.