Hi craigs rus

The best thing you can do is use a macro.

There is also a worksheet function if you want
=UPPER(D7)

See this webpages

http://www.mvps.org/dmcritchie/excel/proper.htm
Or
http://www.cpearson.com/excel/case.htm

Here are some Macro's for changing text cells in the selection

Sub Uppercase_macro()
Dim selectie As Range
Dim cel As Range
On Error Resume Next
Set selectie = Range(ActiveCell.Address & "," & Selection.Address) _
   .SpecialCells(xlCellTypeConstants, xlTextValues)
If selectie Is Nothing Then Exit Sub
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
For Each cel In selectie
cel.Value = UCase(cel.Value)
Next cel
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub

Sub Lowercase_macro()
Dim selectie As Range
Dim cel As Range
On Error Resume Next
Set selectie = Range(ActiveCell.Address & "," & Selection.Address) _
   .SpecialCells(xlCellTypeConstants, xlTextValues)
If selectie Is Nothing Then Exit Sub
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
For Each cel In selectie
cel.Value = LCase(cel.Value)
Next cel
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub

Sub Propercase_macro()
Dim selectie As Range
Dim cel As Range
On Error Resume Next
Set selectie = Range(ActiveCell.Address & "," & Selection.Address) _
   .SpecialCells(xlCellTypeConstants, xlTextValues)
If selectie Is Nothing Then Exit Sub
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
For Each cel In selectie
cel.Value = StrConv(cel.Value, vbProperCase)
Next cel
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub