How to alter display

I have metadata records like "ZIP:90210" or "ZIP:None" in my physical layer column and in the business layer I want to reformat it to "90210" or "None" by taking the prefix off. How do I go about doing that (and note that I need to search for ":" character and take off everything before this.
Thanks for your help.
Edited by: user12474233 on May 23, 2013 1:40 PM

I apologize what I want to manipulate is the column name of the metadata. The link you provide manipulates the result of the data that gets pulled back. Any thoughts?

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