I want to change my Backend from MSDE to MSSQL Express.
For testing I have done the following things

-Attached Database to MSSQLExpress.
-In SQLStringConnect() the only thing I changed Server=myserver to Server=myserver\SQLExpress.

After doing this everything is fine.

Has anyone experienced any difficulties by upgrading the Backend?
What other things should I take care for?
Can I change the same Database from SQLExpress to MSDE again?

Thanks