Create vertical text
Problem
You want to create text that looks like:
H e l l o W o r l d !
You could type the text, adding Shift+Enter after each character and then apply centered paragraph formatting to the whole text box.
Which will get the job done but will be very tedious.
Or ...
Use VBA
Select the text, run this macro. Voila.
Sub VerticalizeText()
Dim oSh As Shape
Dim x As Long
Dim sTemp As String
Set oSh = ActiveWindow.Selection.ShapeRange(1)
With oSh.TextFrame.TextRange
For x = 1 To Len(.Text)
sTemp = sTemp & Mid$(.Text, x, 1) & Chr$(11)
Next
.Text = sTemp
End With
oSh.TextFrame.TextRange.ParagraphFormat.Alignment = _
ppAlignCenter
End Sub
See How do I use VBA code in PowerPoint? to learn how to use this example code.