Delphi ADO Connection String Edirot

I am creating an application that requires me to provide the User with the ability, at run-time, to specify the connection string parameter in order to use an TADOConnection to access databases. The issue here is that I do not know the databases towhich the User may want to connect. Therefore, I am looking for either a component (or some guidance on developing a component) that I can use that will allow the User to perform the same sort of ConnectionString editing that I can do during designtime.