OR ... use XL's built in feature:

Select the cell, then, from the Menu Bar:

<Format> <Cells> <Alignment> tab,

And under the "Orientation" section,
Click on the box to the left of the "Degree Box",
the one that displays "Text" in a vertical orientation.

What do you mean by *go verically* ? do you mean like

C
A
M
P
B
E
L
L

If so press and hold the Alt key whle you press the Enter key after every
letter.