Migrating application from SSCE to SSE

Hi,
I have a large project based on SQLServer-CE 3.5.  Now I need to convert it to SQLServer.  My questions are:

1) If I just change the connection strings in aap.config, will it work?

2) What about the datasets which have been made with SQLServer-CE database.  Shall I need to change them too or app.config change will help there as well?

Thanks