During the installation of MS SQL 2005 Express you will come to a screen named "Authentication Mode". Please follow the below instructions when you get to that screen. If the below install choices are not followed LYNX Enterprise will not run correctly.
On the "Authentication Mode" screen
1. Choose "Mixed Mode (Windows Authentication and SQL Server Authentication)"
2. It will then require you to "Specify a Password"
3. Type in a password and then confirm the password by typing it in again.
4. Choose "Next"
5. Continue with the rest of the installation.