In order for a row to be highlighted it has to be selected. When you click on a row it will highlight and set the row property.
For example, if you highlight the fourth row of data by clicking the cell in the first column then you can determine which row , column and cell was highlighted with this code.
intRow=msflexgrid1.row
intCol=msflexgrid1.col
The specific cell is cell(introw, intcol).
How you accomplish this also depends on how the data gets into your grid. Personally I don't like to bind the data to my controls, I find that placing the data in arrays and then filling the grid with the data gives me more flexibility.
If you are really new to the flex grid then do some searches on this and other forums, as well as the msdn. You will find the asnwers to a lot of your questions without having to wait for replies. Thanks and Good Luck!
zemp