Select Field Based Alphabet

I'm sure this is simple. How do I write code to select a field that begins with the letters a-d?
Hi Ran
Can you be a bit more specific
Not quite sure what you meant by select a field - do you meant jump to that field (ie set the focus to it)
or do you mean
On a table view - I would like to list all records wher from a given field the contents start with either A,B, C or D.
i think it is the latter but ....