You can number each row by adding a column and putting in =row() in that
column of data.

Select the affected cells and add borders to them.

To quickly select the entire list:
Select a cell in the list
On the keyboard, hold the Ctrl key, and on the number keypad,
    press the * key

To add a border to the selected cells:
Click the arrow to the right of the Borders button on the
    Excel formatting toolbar.
Click the All Borders button, the second button in the last row.

To add numbers to the rows:
In the first cell in column 2, type a 1
In the cell below, type a 2
Select both cells
Point to the fill handle -- the small black square at the bottom right
of the selection
When the pointer changes to a black plus sign, double-click
The numbers will fill down to the last row of data.