Need to split a column into two

[liza]

I have a WCF service. I have a field (say Name) and now client wants to change this into FirstName (first half before a space) and LastName (everything after a space). This WCF service is being used by different applications and I want to accomplish this without breaking any existing clients. Can I add two new datamember even though they are not exists in the database? How the value will be set or get for these two new datamembers?Thanks