How to change text in cell when entering "Y"

[djd]

I need to prepare a spreadshhet where a column is first red. On entering the
letter y the cell changes to green with text "checked" inserted

 

[Gary''s Student]

Preset the column to Red. Insert this event sub in the worksheet code area:

Private Sub Worksheet_Change(ByVal Target As Range)
Set t = Target
Set c = Range("C:C")
If Intersect(t, c) Is Nothing Then Exit Sub
If t.Value <> "y" Then Exit Sub
Application.EnableEvents = False
t.Interior.ColorIndex = 10
t.Value = "checked"
Application.EnableEvents = True
End Sub

The code uses column C. Adapt for your specifics.
Because it is worksheet code, it is very easy to install and use:

1. right-click the tab name near the bottom of the window
2. select View Code - this brings up a VBE window
3. paste the stuff in and close the VBE window

If you save the workbook, the macro will be saved with it.

To remove the macro:

1. bring up the VBE windows as above
2. clear the code out
3. close the VBE window

To learn more about macros in general, see:

http://www.mvps.org/dmcritchie/excel/getstarted.htm

To learn more about Event Macros (worksheet code), see:

http://www.mvps.org/dmcritchie/excel/event.htm