Custom columns names for custom reports?

Our application allows the customer to change the on-screen field names to his personal requirements (eg Target = 2008 Target). My customer wants his on-screen field names to be reflected the metadata view so he can write reports with his change field names. We have several customers with this application so the field names will change by customer.

How do you do this, can SQL/Server support 2 field names - the original and a preferred display option?

If we change the field names how do we ensure that existing (or future) reports from Reporting Services dynamically pick up the customers preferred field name and any existing (or inherited) reports will continue always run.Question moved to SQL Server Forum.