[AccessD] Returning only numbers from a phone number field

Is there a built in function that would return only the numbers from a text
field?  I have a table that allows the users to enter a phone number however
they like, ie with or without parentheses or dashes or dots or any
combination of them.

I would like to extract only the numbers (0-9) from this field.  Is there
anything built in to Access 2003 to do this or do I just need to create my
own little function to do it?

TIA, 

Rusty Hammond


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