same way you would paramterize any other type of data in WinRunner.
Chapter 21 "Creating Data Driven Tests" in the User's Guide and Chapter 8 ""Creating Data-Driven Tests" in the Tutorial.
Go through those and they'll enable you to learn how to do it.
This is your second post in total with both of them being realted to questions that are basic and can be answered through going through the documentation and exercises that Mercury has developed to let you self-learn the application. I suggest you take the time to sit down and go through them. You haven't shown that you even taken the inititive to do taht basic step up to this point.