[AccessD] Difference in strings

Everyone,

Is there a built-in function in VBA that will compare two strings and return the difference of the two?  I want to remove values from a listbox so I thought I could set one variable to the listbox rowsource and another variable to the listbox itemsselected and return the difference of the two.  If there is a built-in function, I would rather use that than create my own, but will if I have to.

Thanks.

Ken Stoker
Technology Commercialization
Information Systems Administrator
PH: (509) 375-3758
FAX: (509) 375-6731
E-mail:  Kenneth.Stoker at pnl.gov