Dynamic connection string

Sorry about being unclear. I am new to .NET and I am unsure of how to go about this program. The questions I am asking are very broad because I don’t know where to start. I can refine them as the conversation progresses. I have no set parameters for this program. I want to end up with a small program that can be distributed to companies and easily installed. I assume MSDE would be the best to thing to use considering the target users. Project: 8-10 forms each with 1 or more data grids This will NOT be deployed to the net. It is a stand alone program that requires a database to store data. The database must be with the program. Database: MSDE Total size will never exceed 1 Gig (I am assuming this is the DB of choice in this situation) Target users: The program will be distributed to a variety of small businesses who are all windows users. These businesses are not connected to each other by a network and are unrelated to each other. Goal: To create a small program that I could distribute to these companies. It will be self contained in that it will come with the program and the database in one package. I would like one connection string available to the whole application. Questions: Is it difficult/possible to make the program so it can be installed on either a network or on a single machine? If it is difficult…forget the network stuff for now. As for the questions concerning when I want to supply the db name and such. I have no clue, nor do I have any preferences. What is the easiest and most efficient way to do it? If possible I would like to end up with a connection module that I can reuse. You would think something so basic would be a bit more stratigh forward.