Tools for Building an OCA (Occasionally Connected Application)

Question

I will be building an in-house, Occasionally Connected App (OCA). What technologies would you suggest I employ.

Here are my parameters:

1. .NET Shop(3.5sp

Answer 1

use unique-identifier for key if you are creating stuff while offline and not connected and when you do connect, updating the database.

this is going to be way easier than using auto-increment key