>Hi,
>How to handle version problem effectively? We are panic to modift the same piece of code for multiple copy of application.
>How version problem handled in real world? Could OOP, Source Safe or etc help us to prevent re-do the same code maintenance many version?
>
>Pls provide detailed info, or URL.
>
>Thank you

In addition to what Bruce replied, choose a category that better fits your problem instead. Many UT members ignore the Chatter category, and your questions are definitely not suited for just Chatter.