Vba - Is There Some Kind Of Loop Command For This

I have a spreadsheet that has a lay out like below

A A A
* A A
* A A
B B B
* B B
* B B

and so on where every letter is a new cell and * = empty cell

I need a peice of code that will highlight all of section A. Section A could have 1 row or an infinate number of rows.

What I need is like a peice of code that means that it will start selecting rows starting from "A3" which is the 1st cell with data and stop selecting rows when the next row has data in the A column.