Customizing the connection string to the server where sp will be created?

When you create a SQL server project, it asks you for the connection string to the database. Can I change this connection string at run time?. By the way it is included in the project properties at desing time.I don't really understand the question - the connection string you mention is the string which tells VS where the assembly and procs etc will be deployed, when you do Deployment - at wich stage would you like to change the string? When your code is invoked eventually, the connection string is not used.

Niels